-ic a-a a-b a-c a-i aaa aab aac aag aai aam aan aar ab- aba abb abc abg abi abm abn abr ac- aca acb acc acg aci acm acn acr ag- aga agb agc agg agi agm agn agr ai- aia aib aic aig aii aim ain air ama amb amc amg ami amm amn amr an- ana anb anc ang ani anm ann anr ar- ara arb arc arg ari arm arn arr baa bab bac bag bai bam ban bar bba bbb bbc bbg bbi bbm bbn bbr bca bcb bcc bcg bci bcm bcn bcr bga bgb bgc bgg bgi bgm bgn bgr bi- bia bib bic big bii bim bin bir bma bmb bmc bmg bmi bmm bmn bmr bna bnb bnc bng bni bnn bnr bra brb brg bri brm brn brr c-- caa cab cac cag cai cam can car cba cbb cbc cbg cbi cbm cbn cbr cca ccb ccc ccg cci ccm ccn ccr cga cgb cgc cgg cgi cgm cgn cgr ci- cia cib cic cig cii cim cin cir cma cmb cmc cmg cmi cmm cmn cmr cn- cna cnb cnc cng cni cnm cnn cnr cra crb crc crg cri crm crn crr gaa gab gac gag gai gam gan gar gba gbc gbg gbi gbm gbn gbr gca gcb gcc gcg gci gcm gcn gcr gga ggb ggc ggg ggi ggm ggn ggr gia gib gic gig gii gim gin gir gma gmb gmc gmg gmi gmm gmn gmr gna gnb gnc gni gnm gnn gnr gra grb grc grg gri grm grn grr ia- iaa iab iac iag iai iam ian iar iba ibb ibc ibg ibi ibm ibn ibr ica icb icc icg ici icm icn icr iga igb igc igg igi igm ign igr iia iib iic iii iim iin iir im- ima imb imc img imi imm imn in- ina inb inc ing ini inm inn inr ir- ira irb irc irg iri irm irn irr m-r maa mab mac mag mai mam man mar mba mbb mbc mbg mbi mbm mbr mc- mca mcb mcc mcg mci mcm mcn mcr mga mgb mgc mgi mgm mgn mgr mi- mia mib mic mig mii mim min mir mma mmb mmc mmg mmi mmm mmn mmr mna mnb mnc mng mni mnm mnn mnr mra mrb mrc mrg mri mrm mrn mrr n-i naa nab nac nag nai nam nan nar nba nbb nbc nbg nbi nbm nbn nbr nca ncb ncc ncg nci ncm ncn ncr nga ngb ngc ngg ngi ngm ngn nia nib nic nig nii nim nin nir nma nmb nmc nmg nmi nmm nmn nmr nna nnb nnc nng nni nnm nnn nra nrb nrc nrg nri nrm nrn nrr ra- raa rab rac rag rai ram ran rar rba rbb rbc rbg rbi rbm rbn rbr rca rcb rcc rcg rci rcm rcn rcr rga rgb rgc rgg rgi rgn rgr ria rib ric rig rii rim rin rir rma rmb rmc rmg rmi rmm rmn rmr rna rnb rnc rng rni rnm rnn rnr rra rrb rrc rrg rri rrm rrn rrr