search T
search T$
insert A
insert G
insert T
insert C
insert AACT
insert AAGG
insert AACA
insert AGGT
insert AA
insert GTC
search AA
print
search A
search AA$
search G
search G$
search GTC$
search CT
search AAA$
print
insert ATC
insert ATCGTT 
print
search AT
search AT$
search ATC$

