-ic a-a a-b a-c a-i aaa aab aac aag aah aai aar ab- aba abb abc abg abh abi abr ac- aca acb acc acg ach aci acr ag- aga agb agc agg agh agi agr aha ahb ahc ahg ahh ahi ahr ai- aia aib aic aig aih aii air ar- ara arb arc arg arh ari arr baa bab bac bag bah bai bar bba bbb bbc bbg bbh bbi bbr bca bcb bcc bcg bch bci bcr bga bgb bgc bgg bgh bgi bgr bha bhb bhc bhg bhh bhi bhr bi- bia bib bic big bih bii bir bra brb brg brh bri brr c-- caa cab cac cag cah cai car cba cbb cbc cbg cbh cbi cbr cca ccb ccc ccg cch cci ccr cga cgb cgc cgg cgh cgi cgr ch- cha chb chc chg chh chi chr ci- cia cib cic cig cih cii cir cra crb crc crg crh cri crr gaa gab gac gag gah gai gar gba gbc gbg gbh gbi gbr gca gcb gcc gcg gch gci gcr gga ggb ggc ggg ggh ggi ggr gha ghb ghc ghg ghh ghi ghr gia gib gic gig gih gii gir gra grb grc grg grh gri grr h-i haa hab hac hag hah hai har hba hbb hbc hbg hbh hbi hbr hca hcb hcc hcg hch hci hcr hga hgb hgc hgg hgh hgi hgr hha hhb hhc hhg hhh hhi hhr hia hib hic hig hih hii hir hr- hra hrb hrc hrg hrh hri hrr ia- iaa iab iac iag iah iai iar iba ibb ibc ibg ibh ibi ibr ica icb icc icg ich ici icr iga igb igc igg igh igi igr iha ihb ihc ihg ihh ihi ihr iia iib iic iih iii iir ir- ira irb irc irg iri irr ra- raa rab rac rag rah rai rar rba rbb rbc rbg rbh rbi rbr rca rcb rcc rcg rch rci rcr rga rgb rgc rgg rgh rgi rgr rh- rha rhb rhc rhg rhh rhi rhr ria rib ric rig rih rii rir rra rrb rrc rrg rrh rri rrr