-th a-a a-b a-t aaa aab aae aah aak aao aas aat ab- aba abb abe abh abk abo abs abt aea aeb aee aeh aek aeo aes aet aha ahb ahe ahh ahk aho ahs aht aka akb ake akh akk ako aks aoa aob aoe aoh aok aoo aos aot as- asa asb ase ash ask aso ass ast at- ata atb ate ath ato ats att baa bab bae bah bak bao bas bat bba bbb bbe bbh bbk bbo bbs bbt be- bea beb bee beh bek beo bes bet bha bhb bhe bhh bhk bho bhs bht bka bkb bke bkk bko bks bkt boa bob boe boh bok boo bos bot bsa bsb bse bsh bsk bso bss bst bta btb bte bth btk bto bts btt eaa eab eae eah eak eao eas eat eba ebb ebe ebh ebk ebo ebs ebt eea eeb eee eek eeo ees eet eha ehb ehe ehh eho ehs eht eka ekb eke ekh eko eks ekt eo- eoa eob eoe eoh eok eoo eos eot es- esa esb ese esh esk eso ess est eta etb ete eth etk eto ets ett haa hab hae hah hak hao has hat hba hbb hbe hbh hbk hbo hbs hbt he- hea heb hee heh hek heo hes het hha hhb hhe hhh hhk hho hhs hht hka hkb hkh hkk hko hks hkt hoa hob hoe hoh hok hoo hos hot hsa hsb hse hsh hsk hss hst hta htb hte hth htk hto hts htt k-t ka- kaa kab kae kah kak kao kas kat kba kbb kbe kbh kbk kbo kbs ke- kea keb kee keh kek keo kes ket kha khe khh khk kho khs kkb kke kkh kkk kks kkt koa kob koe koh kok koo kos kot ksa ksb kse ksh ksk kso kss kst kta ktb kte kth ktk kto kts ktt oaa oab oae oah oak oao oas oat ob- oba obb obe obh obk obo obs obt oea oeb oee oeh oeo oes oet oha ohe ohh oho ohs oht oka okb oke okk oko oks oo- ooa oob ooh ook ooo oos oot os- osa osb ose osh osk oso oss ost ot- ota otb ote oth otk oto ots ott saa sab sae sah sak sao sas sat sba sbb sbe sbh sbk sbo sbs sbt se- sea seb see seh sek seo ses set sh- sha shb she shh shk sho shs sht sk- ska skb ske skh skk sko sks skt soa sob soe soh sok soo sos sot ss- ssa ssb sse ssh ssk sso sss sst sta stb ste sth stk sto sts stt taa tab tae tah tak tao tas tat tba tbb tbe tbh tbk tbo tbs tbt te- tea teb tee teh tek teo tes tet th- tha thb the thh thk tho ths tht tka tkb tke tkk tko tks tkt to- toa tob toe toh tok too tos tot tsa tsb tse tsh tsk tso tss tst tta ttb tte tth ttk tto tts ttt