18 possible answers to
Answers with 3 characters: AHA EEK HAH HOO OHO SAY SOH WOW Answers with 4 characters: EGAD GOSH OHMY YIPE Answers with 5 characters: HELLO Answers with 6 characters: MYMYMY YOWZAH Answers with 7 characters: HEIGHHO Answers with 8 characters: HELLO-19 Answers with 9 characters: HOLYSMOKE