-th a-a a-b a-t aaa aab aah aao aap aat aax ab- aba abb abh abo abp abt abx aha ahb ahh aho ahp aht ahx aoa aob aoh aoo aop aot aox ap- apa apb aph apo app apt apx at- ata atb ath ato atp att atx ax- axa axh axo axp axt axx b-p baa bab bah bao bap bat bax bba bbb bbh bbo bbp bbt bbx bha bhb bhh bho bhp bht bhx boa bob boh boo bop bot box bpa bpb bph bpo bpp bpt bpx bta btb bth bto btp btt btx bxb bxo bxx haa hab hah hao hap hat hax hba hbb hbh hbo hbp hbt hbx hha hhb hhh hho hhp hht hoa hob hoh hoo hop hot hox hpa hpb hph hpo hpp hpt hta htb hth hto htp htt htx oaa oab oah oao oap oat oax ob- oba obb obh obo obp obt obx oha ohh oho ohp oht oo- ooa oob ooh ooo oop oot oox op- opa opb oph opo opp opt opx ot- ota otb oth oto otp ott ox- oxa oxb oxo oxt oxx p-p paa pab pah pao pap pat pax pba pbb pbo pbp pbt pbx pha phb pho php pht phx poa pob poh poo pop pot pox ppa ppb pph ppo ppp ppt ppx pt- pta ptb pth pto ptp ptt ptx pxt t-x taa tab tah tao tap tat tax tba tbb tbh tbo tbp tbt th- tha thb thh tho thp tht thx to- toa tob toh too top tot tox tpa tpb tph tpo tpp tpt tpx tta ttb tth tto ttp ttt ttx txt xaa xap xat xbx xhp xht xoa xoo xop xot xox xpa xpb xpo xpp xpt xtp xtx xxo xxp xxx