1
2
3
0

1
test contains -i
4
nothing
4
nothing
4
alpha1.1
alpha1.2
beta2.1
beta2.2
yep3.1
yep3.2
gamma3.1
gamma3.2
yep4.1
yep4.2
delta4.1
delta4.2
epsilon5.2
zeta 6.2
###
0
1