-er -th a-a a-b a-t aaa aab aae aag aah aao aap aar aat ab- aba abb abe abg abh abo abp abr abt aea aeb aee aeg aeh aeo aep aer aet ag- aga agb age agg agh ago agp agr agt aha ahb ahe ahg ahh aho ahp ahr aht aoa aob aoe aog aoh aoo aop aor aot ap- apa apb ape apg aph apo app apr apt ar- ara arb are arg arh aro arp arr art at- ata atb ate atg ath ato atp atr att b-p baa bab bae bag bah bao bap bar bat bba bbb bbe bbg bbh bbo bbp bbr bbt be- bea beb bee beg beh beo bep ber bet bga bgb bge bgg bgh bgo bgp bgr bgt bha bhb bhe bhg bhh bho bhp bhr bht boa bob boe bog boh boo bop bor bot bpa bpb bpe bpg bph bpo bpp bpr bpt bra brb bre brg brh bro brp brr brt bta btb bte btg bth bto btp btr btt eaa eab eae eag eah eao eap ear eat eba ebb ebe ebg ebh ebo ebp ebr ebt eea eeb eee eeg eeo eep eer eet ega egb ege egg egh ego egp egr egt eha ehb ehe ehg ehh eho ehp ehr eht eo- eoa eob eoe eog eoh eoo eop eor eot ep- epa epb epe epg eph epo epp epr ept era erb ere erg erh ero erp err ert eta etb ete etg eth eto etp etr ett g-p gaa gab gae gag gah gao gap gar gat gba gbe gbg gbh gbo gbp gbr gbt ge- gea geb gee geg geh geo gep ger get gga ggb ggg ggh ggo ggp ggr ggt gha ghb ghe ghg ghh gho ghp ghr ght goa gob goe gog goh goo gop gor got gpa gpb gpe gpg gph gpo gpp gpr gpt gra grb gre grg grh gro grp grr grt gta gtb gte gtg gth gto gtp gtr gtt haa hab hae hag hah hao hap har hat hba hbb hbe hbg hbh hbo hbp hbr hbt he- hea heb hee heg heh heo hep her het hga hgb hge hgg hgh hgo hgp hgr hgt hha hhb hhe hhg hhh hho hhp hhr hht hoa hob hoe hog hoh hoo hop hor hot hpa hpb hpe hpg hph hpo hpp hpr hpt hr- hra hrb hre hrg hrh hro hrp hrr hrt hta htb hte htg hth hto htp htr htt oaa oab oae oag oah oao oap oar oat ob- oba obb obe obg obh obo obp obr obt oea oeb oee oeg oeh oeo oep oer oet oga oge ogg ogh ogo ogp ogt oha ohe ohg ohh oho ohp ohr oht oo- ooa oob oog ooh ooo oop oor oot op- opa opb ope opg oph opo opp opr opt or- ora orb ore org orh oro orp orr ort ot- ota otb ote otg oth oto otp otr ott p-p paa pab pae pag pah pao pap par pat pba pbb pbe pbg pbo pbp pbr pbt pea peb pee peg peh peo pep per pet pga pgb pge pgg pgh pgo pgp pgr pgt pha phb phe phg pho php phr pht poa pob poe pog poh poo pop por pot ppa ppb ppe ppg pph ppo ppp ppr ppt pra prb pre prg prh pro prp prr prt pt- pta ptb pte ptg pth pto ptp ptr ptt ra- raa rab rae rag rah rao rap rar rat rba rbb rbe rbg rbh rbo rbp rbr rbt re- rea reb ree reg reh reo rep rer ret rga rgb rge rgg rgh rgo rgp rgr rgt rh- rha rhb rhe rhg rhh rho rhp rhr rht roa rob roe rog roh roo rop ror rot rpa rpb rpe rpg rph rpo rpp rpr rpt rra rrb rrg rrh rrp rrr rrt rta rtb rte rtg rto rtp rtr rtt taa tab tae tag tah tao tap tar tat tba tbb tbe tbg tbh tbo tbp tbr tbt te- tea teb tee teg teh teo tep ter tet tga tgb tge tgg tgh tgo tgp tgr tgt th- tha thb the thg thh tho thp thr tht to- toa tob toe tog toh too top tor tot tpa tpb tpe tpg tph tpo tpp tpr tpt tra trb tre trg trh tro trp trr trt tta ttb tte ttg tth tto ttp ttr ttt