NR name output1
1  a    pan
1  b    pan
1  i    1
1  x    0.34679014
1  y    0.72680286
2  a    eks
2  b    pan
2  i    2
2  x    0.75867996
2  y    0.52215111
3  a    wye
3  b    wye
3  i    3
3  x    0.20460331
3  y    0.33831853
4  a    eks
4  b    wye
4  i    4
4  x    0.38139939
4  y    0.13418874
5  a    wye
5  b    pan
5  i    5
5  x    0.57328892
5  y    0.86362447
6  a    zee
6  b    pan
6  i    6
6  x    0.52712616
6  y    0.49322129
7  a    eks
7  b    zee
7  i    7
7  x    0.61178406
7  y    0.18788492
8  a    zee
8  b    wye
8  i    8
8  x    0.59855401
8  y    0.97618139
9  a    hat
9  b    wye
9  i    9
9  x    0.03144188
9  y    0.74955076
10 a    pan
10 b    wye
10 i    10
10 x    0.50262601
10 y    0.95261836

NR names output2
1  a_a   before
1  a_b   before
1  a_i   before
1  a_x   before
1  a_y   before
1  b_a   before
1  b_b   before
1  b_i   before
1  b_x   before
1  b_y   before
1  i_a   before
1  i_b   before
1  i_i   before
1  i_x   before
1  i_y   before
1  x_a   before
1  x_b   before
1  x_i   before
1  x_x   before
1  x_y   before
1  y_a   before
1  y_b   before
1  y_i   before
1  y_x   before
1  y_y   before
2  a_a   before
2  a_b   before
2  a_i   before
2  a_x   before
2  a_y   before
2  b_a   before
2  b_b   before
2  b_i   before
2  b_x   before
2  b_y   before
2  i_a   before
2  i_b   before
2  i_i   before
2  i_x   before
2  i_y   before
2  x_a   before
2  x_b   before
2  x_i   before
2  x_x   before
2  x_y   before
2  y_a   before
2  y_b   before
2  y_i   before
2  y_x   before
2  y_y   before
3  a_a   before
3  a_b   before
3  a_i   before
3  a_x   before
3  a_y   before
3  b_a   before
3  b_b   before
3  b_i   before
3  b_x   before
3  b_y   before
3  i_a   before
3  i_b   before
3  i_i   before
3  i_x   before
3  i_y   before
3  x_a   before
3  x_b   before
3  x_i   before
3  x_x   before
3  x_y   before
3  y_a   before
3  y_b   before
3  y_i   before
3  y_x   before
3  y_y   before
4  a_a   before
4  a_b   before
4  a_i   before
4  a_x   before
4  a_y   before
4  b_a   before
4  b_b   before
4  b_i   before
4  b_x   before
4  b_y   before
4  i_a   before
4  i_b   before
4  i_i   before
4  i_x   before
4  i_y   before
4  x_a   before
4  x_b   before
4  x_i   before
4  x_x   before
4  x_y   before
4  y_a   before
4  y_b   before
4  y_i   before
4  y_x   before
4  y_y   before
5  a_a   before
5  a_b   before
5  a_i   before
5  a_x   before
5  a_y   before
5  b_a   before
5  b_b   before
5  b_i   before
5  b_x   before
5  b_y   before
5  i_a   before
5  i_b   before
5  i_i   before
5  i_x   before
5  i_y   before
5  x_a   before
5  x_b   before
5  x_i   before
5  x_x   before
5  x_y   before
5  y_a   before
5  y_b   before
5  y_i   before
5  y_x   before
5  y_y   before
6  a_a   before
6  a_b   before
6  a_i   before
6  a_x   before
6  a_y   before
6  b_a   before
6  b_b   before
6  b_i   before
6  b_x   before
6  b_y   before
6  i_a   before
6  i_b   before
6  i_i   before
6  i_x   before
6  i_y   before
6  x_a   before
6  x_b   before
6  x_i   before
6  x_x   before
6  x_y   before
6  y_a   before
6  y_b   before
6  y_i   before
6  y_x   before
6  y_y   before
7  a_a   before
7  a_b   before
7  a_i   before
7  a_x   before
7  a_y   before
7  b_a   before
7  b_b   before
7  b_i   before
7  b_x   before
7  b_y   before
7  i_a   before
7  i_b   before
7  i_i   before
7  i_x   before
7  i_y   before
7  x_a   before
7  x_b   before
7  x_i   before
7  x_x   before
7  x_y   before
7  y_a   before
7  y_b   before
7  y_i   before
7  y_x   before
7  y_y   before
8  a_a   before
8  a_b   before
8  a_i   before
8  a_x   before
8  a_y   before
8  b_a   before
8  b_b   before
8  b_i   before
8  b_x   before
8  b_y   before
8  i_a   before
8  i_b   before
8  i_i   before
8  i_x   before
8  i_y   before
8  x_a   before
8  x_b   before
8  x_i   before
8  x_x   before
8  x_y   before
8  y_a   before
8  y_b   before
8  y_i   before
8  y_x   before
8  y_y   before
9  a_a   before
9  a_b   before
9  a_i   before
9  a_x   before
9  a_y   before
9  b_a   before
9  b_b   before
9  b_i   before
9  b_x   before
9  b_y   before
9  i_a   before
9  i_b   before
9  i_i   before
9  i_x   before
9  i_y   before
9  x_a   before
9  x_b   before
9  x_i   before
9  x_x   before
9  x_y   before
9  y_a   before
9  y_b   before
9  y_i   before
9  y_x   before
9  y_y   before
10 a_a   before
10 a_b   before
10 a_i   before
10 a_x   before
10 a_y   before
10 b_a   before
10 b_b   before
10 b_i   before
10 b_x   before
10 b_y   before
10 i_a   before
10 i_b   before
10 i_i   before
10 i_x   before
10 i_y   before
10 x_a   before
10 x_b   before
10 x_i   before
10 x_x   before
10 x_y   before
10 y_a   before
10 y_b   before
10 y_i   before
10 y_x   before
10 y_y   before
