-ic a-a a-b a-c a-i aaa aab aac aae aah aai aak aan ab- aba abb abc abe abh abi abk abn ac- aca acb acc ace ach aci ack acn aea aeb aec aee aeh aei aek aen aha ahb ahc ahe ahh ahi ahk ahn ai- aia aib aic aie aih aii aik ain aka akb akc ake akh aki akk akn an- ana anb anc ane anh ani ank ann baa bab bac bae bah bai bak ban bba bbb bbc bbe bbh bbi bbk bbn bca bcb bcc bce bch bci bck bcn be- bea beb bec bee beh bei bek ben bha bhb bhc bhe bhh bhi bhk bi- bia bib bic bie bih bii bik bin bka bkb bkc bke bkk bkn bna bnb bnc bne bni bnk bnn c-- caa cab cac cae cah cai cak can cba cbb cbc cbe cbh cbi cbk cbn cca ccb ccc cce cch cci cck ccn ce- cea ceb cec cee ceh cei cek cen ch- cha chb chc che chh chi chk chn ci- cia cib cic cie cih cii cik cin cka ckb ckc ckh cki cn- cna cnb cnc cne cnh cni cnn eaa eab eac eae eah eai eak ean eba ebb ebc ebe ebh ebi ebk ebn ec- eca ecb ecc ece ech eci eck ecn eea eeb eec eee eek een eha ehb ehc ehe ehh ehi ehn eia eib eic eie eii eik ein eka ekb ekc eke ekh eki en- ena enb enc ene enh eni enk enn h-i haa hab hac hae hah hai hak han hba hbb hbc hbe hbh hbi hbk hbn hca hcb hcc hce hch hci hck hcn he- hea heb hec hee heh hei hek hen hha hhb hhc hhe hhh hhi hhk hhn hia hib hic hie hih hii hik hin hka hkb hkh hki hkk hkn hna hnb hnc hne hnh hnk hnn ia- iaa iab iac iae iah iai ian iba ibb ibc ibe ibh ibi ibk ibn ica icb icc ice ich ici ick icn ie- iea iec iee iei iek ien iha ihb ihc ihe ihh ihi ihk ihn iia iib iic iie iih iii iin ika ikb ikc ike iki ikk in- ina inb inc ine inh ini ink inn ka- kaa kab kac kae kah kai kak kan kba kbb kbc kbe kbh kbi kbk kbn kca kcb kcc kce kch kci kck kcn ke- kea keb kec kee keh kei kek ken kha khe khh khi khk khn kia kib kic kie kih kii kik kin kkb kkc kke kkh kki kkk kkn kn- kna knc kne kni knk knn n-i naa nab nac nae nah nai nak nan nba nbb nbc nbe nbi nbk nbn nca ncb ncc nce nch nci nck ncn ne- nea neb nec nee neh nei nek nen nha nhb nhc nhe nhh nhi nhk nhn nia nib nic nie nih nii nik nin nka nkc nke nki nkk nkn nna nnb nnc nne nnh nni nnk nnn