• An ant consists of 3 Parts a n and t if it is written as ant we assume it is alive. Everything that is not written as ant is assumed to be a part of a dead ant.
• The rules also state, that if an there are multiple ant-parts (e.g. a, n, n) we assume as little alive ants as possible. Therefore this example would result in 2 dead ants

If we take your example:

ant a ant anatttt

This tanslates to:

ant a ant anatttt

Meaning we have:

• 2 alive ants green
• 1 dead with all parts a, n and t red
• 2 dead with missing n yellow, orange
• 1 dead with missing a and t cyan