a-a a-b a-i aaa aab aae aah aai aan aao aas ab- aba abb abe abh abi abn abo abs aea aeb aee aeh aei aen aeo aes aha ahb ahe ahh ahi ahn aho ahs ai- aia aib aie aih aii ain aio ais an- ana anb ane anh ani ann ano ans aoa aob aoe aoh aoi aon aoo aos as- asa asb ase ash asi asn aso ass baa bab bae bah bai ban bao bas bba bbb bbe bbh bbi bbn bbo bbs be- bea beb bee beh bei ben beo bes bha bhb bhe bhh bhi bho bhs bi- bia bib bie bih bii bin bio bis bna bnb bne bni bnn bno bns boa bob boe boh boi bon boo bos bsa bsb bse bsh bsi bsn bso bss eaa eab eae eah eai ean eao eas eba ebb ebe ebh ebi ebn ebo ebs eea eeb eee een eeo ees eha ehb ehe ehh ehi ehn eho ehs eia eib eie eii ein eio eis en- ena enb ene enh eni enn eno ens eo- eoa eob eoe eoh eoi eon eoo eos es- esa esb ese esh esi esn eso ess h-i haa hab hae hah hai han hao has hba hbb hbe hbh hbi hbn hbo hbs he- hea heb hee heh hei hen heo hes hha hhb hhe hhh hhi hhn hho hhs hia hib hie hih hii hin hio his hna hnb hne hnh hnn hno hns hoa hob hoe hoh hoi hon hoo hos hsa hsb hse hsh hsi hsn hss ia- iaa iab iae iah iai ian iao ias iba ibb ibe ibh ibi ibn ibo ibs ie- iea iee iei ien ies iha ihb ihe ihh ihi ihn iho ihs iia iib iie iih iii iin iio iis in- ina inb ine inh ini inn ino ins io- ioa iob ioe ioh ioi ion ioo ios is- isa isb ise ish isi isn iso iss n-i naa nab nae nah nai nan nao nas nba nbb nbe nbi nbn nbo nbs ne- nea neb nee neh nei nen neo nes nha nhb nhe nhh nhi nhn nhs nia nib nie nih nii nin nio nis nna nnb nne nnh nni nnn nno nns no- noa nob noe noh noi non noo nos nsa nsb nse nsh nsi nsn nso nss o-i oaa oab oae oah oai oan oao oas ob- oba obb obe obh obi obn obo obs oea oeb oee oeh oei oen oeo oes oha ohe ohh ohi ohn oho ohs oia oib oie oii oin oio ois on- ona onb one onh oni onn ono ons oo- ooa oob ooh ooi oon ooo oos os- osa osb ose osh osi osn oso oss saa sab sae sah sai san sao sas sba sbb sbe sbh sbi sbn sbo sbs se- sea seb see seh sei sen seo ses sh- sha shb she shh shi shn sho shs sia sib sie sih sii sin sio sis sna snb sne sni snn sno sns soa sob soe soh soi son soo sos ss- ssa ssb sse ssh ssi ssn sso sss