>left_tail:shouldnt work - right_tail:end with CAC - right:end_with_A_left:discarded_empty_read(N)
TCACCGGGTGGAAACTAGCCCCCCCCCCCACCGTCT
>left:begin_with_G-left_tail:should_work(begin with G) - right_tail:shouldnt work - right:discarded
GAAAAAAACCCCCCCCCCTTTTTTTTTTTT
>left:begin_with_G-left_tail:should_work(begin with A) - right_tail:shouldnt work - right:discarded
AAAAAAACCCCCCCCCCTTTTTTTTTTTTTT
>left_tail:sholdnt_work - right_tail:shouldnt work - right:10bp_remain
CATTATACAGAACACAGCAT
>left_tail:shouldnt work - right_tail:shouldnt work - right:discarded
CATTATACAGAACACAGCAT
>left_tail:shouldnt work - right_tail:shouldnt work - both:right_remains
AAAAAATTTTTTAAAAAA
>left_tail:shouldnt work - right_tail:shouldnt work - both:left_remains-left:10bp
AAAAAATTTT
