-ic a-a a-b a-c a-i aaa aab aac aah aai aan aar aau ab- aba abb abc abh abi abn abr abu ac- aca acb acc ach aci acn acr acu aha ahb ahc ahh ahi ahn ahr ahu ai- aia aib aic aih aii ain air aiu an- ana anb anc anh ani ann anr anu ar- ara arb arc arh ari arn arr aru au- aua aub auc auh aui aun aur b-u baa bab bac bah bai ban bar bau bba bbb bbc bbh bbi bbn bbr bbu bca bcb bcc bch bci bcn bcr bcu bha bhb bhc bhh bhi bhr bhu bi- bia bib bic bih bii bin bir biu bna bnb bnc bni bnn bnr bnu bra brb brh bri brn brr bru bua bub buc buh bui bun bur buu c-- caa cab cac cah cai can car cau cba cbb cbc cbh cbi cbn cbr cbu cca ccb ccc cch cci ccn ccr ccu ch- cha chb chc chh chi chn chr chu ci- cia cib cic cih cii cin cir ciu cn- cna cnb cnc cnh cni cnn cnr cnu cra crb crc crh cri crn crr cru cua cub cuc cuh cui cun cur cuu h-i haa hab hac hah hai han har hau hba hbb hbc hbh hbi hbn hbr hbu hca hcb hcc hch hci hcn hcr hha hhb hhc hhh hhi hhn hhr hhu hia hib hic hih hii hin hir hiu hna hnb hnc hnh hnn hnu hr- hra hrb hrc hrh hri hrn hrr hru hua hub huc huh hui hun hur huu ia- iaa iab iac iah iai ian iar iau iba ibb ibc ibh ibi ibn ibr ibu ica icb icc ich ici icn icr icu iha ihb ihc ihh ihi ihn ihr ihu iia iib iic iih iii iin iir iiu in- ina inb inc inh ini inn inr inu ir- ira irb irc iri irn irr iru iu- iua iub iuc iui iur n-i naa nab nac nah nai nan nar nau nba nbb nbc nbi nbn nbr nbu nca ncb ncc nch nci ncn ncr ncu nha nhb nhc nhh nhi nhn nhr nhu nia nib nic nih nii nin nir niu nna nnb nnc nnh nni nnn nnu nra nrb nrc nri nrn nrr nru nua nub nuc nuh nui nun nur nuu ra- raa rab rac rah rai ran rar rau rba rbb rbc rbh rbi rbn rbr rbu rca rcb rcc rch rci rcn rcr rcu rh- rha rhb rhc rhh rhi rhn rhr rhu ria rib ric rih rii rin rir rna rnb rnc rnh rni rnn rnr rnu rra rrb rrc rrh rri rrn rrr rru rua rub ruc ruh rui run rur ruu ua- uaa uab uac uah uai uan uar uau uba ubb ubc ubh ubi ubn ubr ubu uca ucb ucc uch uci ucn ucr ucu uha uhb uhc uhh uhi uhr uhu uia uib uic uii uin uir uiu un- una unb unc unh uni unn unr unu ur- ura urb urc uri urn urr uru uua uuc uun uur uuu