-ic a-a a-b a-c a-i aaa aab aac aag aah aai aan aar ab- aba abb abc abg abh abi abn abr ac- aca acb acc acg ach aci acn acr ag- aga agb agc agg agh agi agn agr aha ahb ahc ahg ahh ahi ahn ahr ai- aia aib aic aig aih aii ain air an- ana anb anc ang anh ani ann anr ar- ara arb arc arg arh ari arn arr baa bab bac bag bah bai ban bar bba bbb bbc bbg bbh bbi bbn bbr bca bcb bcc bcg bch bci bcn bcr bga bgb bgc bgg bgh bgi bgn bgr bha bhb bhc bhg bhh bhi bhr bi- bia bib bic big bih bii bin bir bna bnb bnc bng bni bnn bnr bra brb brg brh bri brn brr c-- caa cab cac cag cah cai can car cba cbb cbc cbg cbh cbi cbn cbr cca ccb ccc ccg cch cci ccn ccr cga cgb cgc cgg cgh cgi cgn cgr ch- cha chb chc chg chh chi chn chr ci- cia cib cic cig cih cii cin cir cn- cna cnb cnc cng cnh cni cnn cnr cra crb crc crg crh cri crn crr gaa gab gac gag gah gai gan gar gba gbc gbg gbh gbi gbn gbr gca gcb gcc gcg gch gci gcn gcr gga ggb ggc ggg ggh ggi ggn ggr gha ghb ghc ghg ghh ghi ghn ghr gia gib gic gig gih gii gin gir gna gnb gnc gni gnn gnr gra grb grc grg grh gri grn grr h-i haa hab hac hag hah hai han har hba hbb hbc hbg hbh hbi hbn hbr hca hcb hcc hcg hch hci hcn hcr hga hgb hgc hgg hgh hgi hgn hgr hha hhb hhc hhg hhh hhi hhn hhr hia hib hic hig hih hii hin hir hna hnb hnc hng hnh hnn hr- hra hrb hrc hrg hrh hri hrn hrr ia- iaa iab iac iag iah iai ian iar iba ibb ibc ibg ibh ibi ibn ibr ica icb icc icg ich ici icn icr iga igb igc igg igh igi ign igr iha ihb ihc ihg ihh ihi ihn ihr iia iib iic iih iii iin iir in- ina inb inc ing inh ini inn inr ir- ira irb irc irg iri irn irr n-i naa nab nac nag nah nai nan nar nba nbb nbc nbg nbi nbn nbr nca ncb ncc ncg nch nci ncn ncr nga ngb ngc ngg ngh ngi ngn nha nhb nhc nhg nhh nhi nhn nhr nia nib nic nig nih nii nin nir nna nnb nnc nng nnh nni nnn nra nrb nrc nrg nri nrn nrr ra- raa rab rac rag rah rai ran rar rba rbb rbc rbg rbh rbi rbn rbr rca rcb rcc rcg rch rci rcn rcr rga rgb rgc rgg rgh rgi rgn rgr rh- rha rhb rhc rhg rhh rhi rhn rhr ria rib ric rig rih rii rin rir rna rnb rnc rng rnh rni rnn rnr rra rrb rrc rrg rrh rri rrn rrr