test  1 ok (\y)

test  2 ok (\y)

test  3 ok (\y)

test  4 ok (\B)

test  5 ok (\B)

test  6 ok (\<)

test  7 ok (\<)

test  8 ok (\>)

test  9 ok (\>)

test 10 ok (\w)

test 11 ok (\w)

test 12 ok (\W)

test 13 ok (\W)

test 14 ok (\`)

test 15 ok (\`)

test 16 ok (\')

test 17 ok (\')