-er -ic -th a-a a-b a-c a-i a-t aaa aab aac aae aah aai aao aap aar aat ab- aba abb abc abe abh abi abo abp abr abt ac- aca acb acc ace ach aci aco acp acr act aea aeb aec aee aeh aei aeo aep aer aet aha ahb ahc ahe ahh ahi aho ahp ahr aht ai- aia aib aic aie aih aii aio aip air ait aoa aob aoc aoe aoh aoi aoo aop aor aot ap- apa apb apc ape aph api apo app apr apt ar- ara arb arc are arh ari aro arp arr art at- ata atb atc ate ath ati ato atp atr att b-p baa bab bac bae bah bai bao bap bar bat bba bbb bbc bbe bbh bbi bbo bbp bbr bbt bca bcb bcc bce bch bci bco bcp bcr bct be- bea beb bec bee beh bei beo bep ber bet bha bhb bhc bhe bhh bhi bho bhp bhr bht bi- bia bib bic bie bih bii bio bip bir bit boa bob boc boe boh boi boo bop bor bot bpa bpb bpc bpe bph bpi bpo bpp bpr bpt bra brb bre brh bri bro brp brr brt bta btb btc bte bth bti bto btp btr btt c-- caa cab cac cae cah cai cao cap car cat cba cbb cbc cbe cbh cbi cbo cbp cbr cbt cca ccb ccc cce cch cci cco ccp ccr cct ce- cea ceb cec cee ceh cei ceo cep cer cet ch- cha chb chc che chh chi cho chp chr cht ci- cia cib cic cie cih cii cio cip cir cit co- coa cob coc coe coh coi coo cop cor cot cpa cpb cpc cpe cph cpi cpo cpp cpr cpt cra crb crc cre crh cri cro crp crr crt cta ctb ctc cte cth cti cto ctp ctr ctt eaa eab eac eae eah eai eao eap ear eat eba ebb ebc ebe ebh ebi ebo ebp ebr ebt ec- eca ecb ecc ece ech eci eco ecr ect eea eeb eec eee eeo eep eer eet eha ehb ehc ehe ehh ehi eho ehp ehr eht eia eib eic eie eii eio eip eir eit eo- eoa eob eoc eoe eoh eoi eoo eop eor eot ep- epa epb epc epe eph epi epo epp epr ept era erb erc ere erh eri ero erp err ert eta etb etc ete eth eti eto etp etr ett h-i haa hab hac hae hah hai hao hap har hat hba hbb hbc hbe hbh hbi hbo hbp hbr hbt hca hcb hcc hce hch hci hco hcp hcr hct he- hea heb hec hee heh hei heo hep her het hha hhb hhc hhe hhh hhi hho hhp hhr hht hia hib hic hie hih hii hio hip hir hit hoa hob hoc hoe hoh hoi hoo hop hor hot hpa hpb hpc hpe hph hpi hpo hpp hpr hpt hr- hra hrb hrc hre hrh hri hro hrp hrr hrt hta htb htc hte hth hti hto htp htr htt ia- iaa iab iac iae iah iai iao iap iar iat iba ibb ibc ibe ibh ibi ibo ibp ibr ibt ica icb icc ice ich ici ico icp icr ict ie- iea iec iee iei iep ier iet iha ihb ihc ihe ihh ihi iho ihp ihr iht iia iib iic iie iih iii iio iip iir iit io- ioa iob ioc ioe ioh ioi ioo iop ior iot ipa ipb ipc ipe ipi ipo ipp ipr ipt ir- ira irb irc ire iri iro irp irr irt ita itb itc ite ith iti ito itp itt o-i oaa oab oac oae oah oai oao oap oar oat ob- oba obb obc obe obh obi obo obp obr obt oc- oca ocb occ och oci oco ocp ocr oct oea oeb oec oee oeh oei oeo oep oer oet oha ohc ohe ohh ohi oho ohp ohr oht oia oib oic oie oii oio oip oir oit oo- ooa oob ooc ooh ooi ooo oop oor oot op- opa opb opc ope oph opi opo opp opr opt or- ora orb orc ore orh ori oro orp orr ort ot- ota otb otc ote oth oti oto otp otr ott p-p paa pab pac pae pah pai pao pap par pat pba pbb pbc pbe pbi pbo pbp pbr pbt pca pcb pcc pce pch pci pco pcp pcr pct pea peb pec pee peh pei peo pep per pet pha phb phc phe phi pho php phr pht pia pib pic pie pih pii pio pip pir pit poa pob poc poe poh poi poo pop por pot ppa ppb ppc ppe pph ppi ppo ppp ppr ppt pra prb prc pre prh pri pro prp prr prt pt- pta ptb ptc pte pth pti pto ptp ptr ptt ra- raa rab rac rae rah rai rao rap rar rat rba rbb rbc rbe rbh rbi rbo rbp rbr rbt rca rcb rcc rce rch rci rco rcp rcr rct re- rea reb rec ree reh rei reo rep rer ret rh- rha rhb rhc rhe rhh rhi rho rhp rhr rht ria rib ric rie rih rii rio rip rir rit roa rob roc roe roh roi roo rop ror rot rpa rpb rpc rpe rph rpi rpo rpp rpr rpt rra rrb rrc rrh rri rrp rrr rrt rta rtb rtc rte rti rto rtp rtr rtt taa tab tac tae tah tai tao tap tar tat tba tbb tbc tbe tbh tbi tbo tbp tbr tbt tca tcb tcc tce tch tci tco tcp tcr tct te- tea teb tec tee teh tei teo tep ter tet th- tha thb thc the thh thi tho thp thr tht tia tib tic tie tih tii tio tip tir tit to- toa tob toc toe toh toi too top tor tot tpa tpb tpc