-ic a-a a-b a-c a-i aaa aab aac aah aai aan aar ab- aba abb abc abh abi abn abr ac- aca acb acc ach aci acn acr aha ahb ahc ahh ahi ahn ahr ai- aia aib aic aih aii ain air an- ana anb anc anh ani ann anr ar- ara arb arc arh ari arn arr baa bab bac bah bai ban bar bba bbb bbc bbh bbi bbn bbr bca bcb bcc bch bci bcn bcr bha bhb bhc bhh bhi bhr bi- bia bib bic bih bii bin bir bna bnb bnc bni bnn bnr bra brb brh bri brn brr c-- caa cab cac cah cai can car cba cbb cbc cbh cbi cbn cbr cca ccb ccc cch cci ccn ccr ch- cha chb chc chh chi chn chr ci- cia cib cic cih cii cin cir cn- cna cnb cnc cnh cni cnn cnr cra crb crc crh cri crn crr h-i haa hab hac hah hai han har hba hbb hbc hbh hbi hbn hbr hca hcb hcc hch hci hcn hcr hha hhb hhc hhh hhi hhn hhr hia hib hic hih hii hin hir hna hnb hnc hnh hnn hr- hra hrb hrc hrh hri hrn hrr ia- iaa iab iac iah iai ian iar iba ibb ibc ibh ibi ibn ibr ica icb icc ich ici icn icr iha ihb ihc ihh ihi ihn ihr iia iib iic iih iii iin iir in- ina inb inc inh ini inn inr ir- ira irb irc iri irn irr n-i naa nab nac nah nai nan nar nba nbb nbc nbi nbn nbr nca ncb ncc nch nci ncn ncr nha nhb nhc nhh nhi nhn nhr nia nib nic nih nii nin nir nna nnb nnc nnh nni nnn nra nrb nrc nri nrn nrr ra- raa rab rac rah rai ran rar rba rbb rbc rbh rbi rbn rbr rca rcb rcc rch rci rcn rcr rh- rha rhb rhc rhh rhi rhn rhr ria rib ric rih rii rin rir rna rnb rnc rnh rni rnn rnr rra rrb rrc rrh rri rrn rrr