1) sound /i/: sign and sing
2) 2 compound words: pancakes and grasshopper
3) prefixes of time and order: ante-, fore-, ex-, pre-, post-, re-
4) prefixes that change nouns to form verbs
negative and positive prefixes: un-, non-, in-, dis-, re-
size: semi-, mini-, micro-
location: inter-, super-, trans-, ex-, extra-, peri
time and order: ante-, fore-, ex-, pre-, post-, re-
number: mono-, bi-, hex-, oct-, multi-
