19 possible answers to
Answers with 3 characters: OCT TRI UNI Answers with 4 characters: DECA DECI HEXA NONA OCTA OCTO SEMI SEXI TETR Answers with 5 characters: HEPTA PENTA SAYSO TETRA Answers with 6 characters: HEPT-7 QUADRI Answers with 7 characters: DODEC-2