-th a-a a-b a-t aaa aab aah aak aan aao aas aat ab- aba abb abh abk abn abo abs abt aha ahb ahh ahk ahn aho ahs aht aka akb akh akk akn ako aks an- ana anb anh ank ann ano ans ant aoa aob aoh aok aon aoo aos aot as- asa asb ash ask asn aso ass ast at- ata atb ath atn ato ats att baa bab bah bak ban bao bas bat bba bbb bbh bbk bbn bbo bbs bbt bha bhb bhh bhk bho bhs bht bka bkb bkk bkn bko bks bkt bna bnb bnk bnn bno bns bnt boa bob boh bok bon boo bos bot bsa bsb bsh bsk bsn bso bss bst bta btb bth btk btn bto bts btt haa hab hah hak han hao has hat hba hbb hbh hbk hbn hbo hbs hbt hha hhb hhh hhk hhn hho hhs hht hka hkb hkh hkk hkn hko hks hkt hna hnb hnh hnk hnn hno hns hnt hoa hob hoh hok hon hoo hos hot hsa hsb hsh hsk hsn hss hst hta htb hth htk htn hto hts htt k-t ka- kaa kab kah kak kan kao kas kat kba kbb kbh kbk kbn kbo kbs kha khh khk khn kho khs kkb kkh kkk kkn kks kkt kn- kna knk knn kno knt koa kob koh kok kon koo kos kot ksa ksb ksh ksk ksn kso kss kst kta ktb kth ktk ktn kto kts ktt naa nab nah nak nan nao nas nat nba nbb nbk nbn nbo nbs nbt nha nhb nhh nhk nhn nhs nht nka nkk nkn nko nks nkt nna nnb nnh nnk nnn nno nns nnt no- noa nob noh nok non noo nos not nsa nsb nsh nsk nsn nso nss nst nta ntb nth ntk ntn nto nts ntt oaa oab oah oak oan oao oas oat ob- oba obb obh obk obn obo obs obt oha ohh ohn oho ohs oht oka okb okk oko oks on- ona onb onh onk onn ono ons ont oo- ooa oob ooh ook oon ooo oos oot os- osa osb osh osk osn oso oss ost ot- ota otb oth otk otn oto ots ott saa sab sah sak san sao sas sat sba sbb sbh sbk sbn sbo sbs sbt sh- sha shb shh shk shn sho shs sht sk- ska skb skh skk sko sks skt sna snb snk snn sno sns snt soa sob soh sok son soo sos sot ss- ssa ssb ssh ssk ssn sso sss sst sta stb sth stk stn sto sts stt taa tab tah tak tan tao tas tat tba tbb tbh tbk tbn tbo tbs tbt th- tha thb thh thk thn tho ths tht tka tkb tkk tko tks tkt tna tnb tnh tnk tnn tno tns tnt to- toa tob toh tok ton too tos tot tsa tsb tsh tsk tsn tso tss tst tta ttb tth ttk ttn tto tts ttt