a-a a-b a-i aaa aab aah aai aan aao aas ab- aba abb abh abi abn abo abs aha ahb ahh ahi ahn aho ahs ai- aia aib aih aii ain aio ais an- ana anb anh ani ann ano ans aoa aob aoh aoi aon aoo aos as- asa asb ash asi asn aso ass baa bab bah bai ban bao bas bba bbb bbh bbi bbn bbo bbs bha bhb bhh bhi bho bhs bi- bia bib bih bii bin bio bis bna bnb bni bnn bno bns boa bob boh boi bon boo bos bsa bsb bsh bsi bsn bso bss h-i haa hab hah hai han hao has hba hbb hbh hbi hbn hbo hbs hha hhb hhh hhi hhn hho hhs hia hib hih hii hin hio his hna hnb hnh hnn hno hns hoa hob hoh hoi hon hoo hos hsa hsb hsh hsi hsn hss ia- iaa iab iah iai ian iao ias iba ibb ibh ibi ibn ibo ibs iha ihb ihh ihi ihn iho ihs iia iib iih iii iin iio iis in- ina inb inh ini inn ino ins io- ioa iob ioh ioi ion ioo ios is- isa isb ish isi isn iso iss n-i naa nab nah nai nan nao nas nba nbb nbi nbn nbo nbs nha nhb nhh nhi nhn nhs nia nib nih nii nin nio nis nna nnb nnh nni nnn nno nns no- noa nob noh noi non noo nos nsa nsb nsh nsi nsn nso nss o-i oaa oab oah oai oan oao oas ob- oba obb obh obi obn obo obs oha ohh ohi ohn oho ohs oia oib oii oin oio ois on- ona onb onh oni onn ono ons oo- ooa oob ooh ooi oon ooo oos os- osa osb osh osi osn oso oss saa sab sah sai san sao sas sba sbb sbh sbi sbn sbo sbs sh- sha shb shh shi shn sho shs sia sib sih sii sin sio sis sna snb sni snn sno sns soa sob soh soi son soo sos ss- ssa ssb ssh ssi ssn sso sss