i cant see what you mean from your sample but surely just count of whats gone
something like this for test 1
=IF(COUNTIF(B:B,"test 1"),CEILING(COUNTIF(B:B,"test 1"),10)/10&"-"&MOD(COUNTIF(B:B,"test 1")-1,10)+1,"start filling")
that would start with "start filling" then go as each test 1 is picked
1-1
1-2
1-3
.
.
.
up to
1-10
then start
2-1
2-2
.
.
.
2-10 and so on