-er -th a-a a-b a-i a-t aaa aab aae aah aai aao aap aar aat ab- aba abb abe abh abi abo abp abr abt aea aeb aee aeh aei aeo aep aer aet aha ahb ahe ahh ahi aho ahp ahr aht ai- aia aib aie aih aii aio aip air ait aoa aob aoe aoh aoi aoo aop aor aot ap- apa apb ape aph api apo app apr apt ar- ara arb are arh ari aro arp arr art at- ata atb ate ath ati ato atp atr att b-p baa bab bae bah bai bao bap bar bat bba bbb bbe bbh bbi bbo bbp bbr bbt be- bea beb bee beh bei beo bep ber bet bha bhb bhe bhh bhi bho bhp bhr bht bi- bia bib bie bih bii bio bip bir bit boa bob boe boh boi boo bop bor bot bpa bpb bpe bph bpi bpo bpp bpr bpt bra brb bre brh bri bro brp brr brt bta btb bte bth bti bto btp btr btt eaa eab eae eah eai eao eap ear eat eba ebb ebe ebh ebi ebo ebp ebr ebt eea eeb eee eeo eep eer eet eha ehb ehe ehh ehi eho ehp ehr eht eia eib eie eii eio eip eir eit eo- eoa eob eoe eoh eoi eoo eop eor eot ep- epa epb epe eph epi epo epp epr ept era erb ere erh eri ero erp err ert eta etb ete eth eti eto etp etr ett h-i haa hab hae hah hai hao hap har hat hba hbb hbe hbh hbi hbo hbp hbr hbt he- hea heb hee heh hei heo hep her het hha hhb hhe hhh hhi hho hhp hhr hht hia hib hie hih hii hio hip hir hit hoa hob hoe hoh hoi hoo hop hor hot hpa hpb hpe hph hpi hpo hpp hpr hpt hr- hra hrb hre hrh hri hro hrp hrr hrt hta htb hte hth hti hto htp htr htt ia- iaa iab iae iah iai iao iap iar iat iba ibb ibe ibh ibi ibo ibp ibr ibt ie- iea iee iei iep ier iet iha ihb ihe ihh ihi iho ihp ihr iht iia iib iie iih iii iio iip iir iit io- ioa iob ioe ioh ioi ioo iop ior iot ipa ipb ipe ipi ipo ipp ipr ipt ir- ira irb ire iri iro irp irr irt ita itb ite ith iti ito itp itt o-i oaa oab oae oah oai oao oap oar oat ob- oba obb obe obh obi obo obp obr obt oea oeb oee oeh oei oeo oep oer oet oha ohe ohh ohi oho ohp ohr oht oia oib oie oii oio oip oir oit oo- ooa oob ooh ooi ooo oop oor oot op- opa opb ope oph opi opo opp opr opt or- ora orb ore orh ori oro orp orr ort ot- ota otb ote oth oti oto otp otr ott p-p paa pab pae pah pai pao pap par pat pba pbb pbe pbi pbo pbp pbr pbt pea peb pee peh pei peo pep per pet pha phb phe phi pho php phr pht pia pib pie pih pii pio pip pir pit poa pob poe poh poi poo pop por pot ppa ppb ppe pph ppi ppo ppp ppr ppt pra prb pre prh pri pro prp prr prt pt- pta ptb pte pth pti pto ptp ptr ptt ra- raa rab rae rah rai rao rap rar rat rba rbb rbe rbh rbi rbo rbp rbr rbt re- rea reb ree reh rei reo rep rer ret rh- rha rhb rhe rhh rhi rho rhp rhr rht ria rib rie rih rii rio rip rir rit roa rob roe roh roi roo rop ror rot rpa rpb rpe rph rpi rpo rpp rpr rpt rra rrb rrh rri rrp rrr rrt rta rtb rte rti rto rtp rtr rtt taa tab tae tah tai tao tap tar tat tba tbb tbe tbh tbi tbo tbp tbr tbt te- tea teb tee teh tei teo tep ter tet th- tha thb the thh thi tho thp thr tht tia tib tie tih tii tio tip tir tit to- toa tob toe toh toi too top tor tot tpa tpb tpe tph tpi tpo tpp tpr tpt tra trb tre trh tri tro trp trr trt tta ttb tte tth tti tto ttp ttr ttt