-er a-a a-b a-c a-t aaa aab aac aae aaj aao aap aar aat aav ab- aba abb abc abe abj abo abp abr abt abv ac- aca acb acc ace acj aco acp acr act acv aea aeb aec aee aej aeo aep aer aet aev aja ajb ajc aje ajj ajo ajp ajr ajt aoa aob aoc aoe aoj aoo aop aor aot aov ap- apa apb apc ape apj apo app apr apt apv ar- ara arb arc are arj aro arp arr art arv at- ata atb atc ate ato atp atr att atv av- ava avb avc ave avo avp avr avt b-p baa bab bac bae baj bao bap bar bat bav bba bbb bbc bbe bbo bbp bbr bbt bca bcb bcc bce bcj bco bcp bcr bct bcv be- bea beb bec bee beo bep ber bet bev bja bjc bjj bjp bjr bjt boa bob boc boe boj boo bop bor bot bov bpa bpb bpc bpe bpo bpp bpr bpt bpv bra brb bre brj bro brp brr brt brv bta btb btc bte bto btp btr btt btv bva bvb bvc bve bvo bvp bvr bvt bvv c-- c-j caa cab cac cae caj cao cap car cat cav cba cbb cbc cbe cbj cbo cbp cbr cbt cbv cca ccb ccc cce ccj cco ccp ccr cct ccv ce- cea ceb cec cee cej ceo cep cer cet cev cja cjb cjc cjp cjr co- coa cob coc coe coj coo cop cor cot cov cpa cpb cpc cpe cpj cpo cpp cpr cpt cpv cra crb crc cre crj cro crp crr crt crv cta ctb ctc cte cto ctp ctr ctt ctv cva cvb cvc cve cvo cvp cvr cvt cvv eaa eab eac eae eaj eao eap ear eat eav eba ebb ebc ebe ebj ebo ebp ebr ebt ebv ec- eca ecb ecc ece ecj eco ecr ect ecv eea eeb eec eee eeo eep eer eet eev eja ejc ejo ejp ejt eo- eoa eob eoc eoe eoo eop eor eot ep- epa epb epc epe epo epp epr ept era erb erc ere ero erp err ert erv eta etb etc ete etj eto etp etr ett etv eva evb evc eve evo evp evr evt evv jaa jab jac jae jaj jao jap jar jat jav jba jbc jbj jbo jbr jbt jca jcb jcc jce jco jcp jcr jct jea jeb jec jee jej jeo jep jer jet jja jjb jjc jjj jjp jjr joa job joc joe joj joo jop jor jot jpa jpb jpc jpe jpj jpo jpp jpr jpt jra jrb jrc jro jrp jrr jrt jta jtb jtc jte jtp jtr jtt jtv jvb jvc jvp jvt oaa oab oac oae oaj oao oap oar oat oav ob- oba obb obc obe obj obo obp obr obt obv oc- oca ocb occ ocj oco ocp ocr oct ocv oea oeb oec oee oeo oep oer oet oja ojb ojc oje ojo oo- ooa oob ooc ooo oop oor oot oov op- opa opb opc ope opj opo opp opr opt opv or- ora orb orc ore oro orp orr ort orv ot- ota otb otc ote oto otp otr ott otv ov- ova ovb ovc ove ovo ovp ovv p-p paa pab pac pae paj pao pap par pat pav pba pbb pbc pbe pbj pbo pbp pbr pbt pca pcb pcc pce pcj pco pcp pcr pct pcv pea peb pec pee peo pep per pet pev pja pjc pjo pjp poa pob poc poe poo pop por pot pov ppa ppb ppc ppe ppj ppo ppp ppr ppt ppv pra prb prc pre pro prp prr prt prv pt- pta ptb ptc pte ptj pto ptp ptr ptt ptv pva pvb pvc pve pvo pvp pvr pvt pvv ra- raa rab rac rae raj rao rap rar rat rav rba rbb rbc rbe rbo rbp rbr rbt rca rcb rcc rce rcj rco rcp rcr rct rcv re- rea reb rec ree reo rep rer ret rev rja rjc rjp rjr roa rob roc roe roj roo rop ror rot rov rpa rpb rpc rpe rpo rpp rpr rpt rpv rra rrb rrc rrp rrr rrt rta rtb rtc rte rtj rto rtp rtr rtt rtv rva rvb rvc rve rvo rvp rvr rvt rvv taa tab tac tae taj tao tap tar tat tav tba tbb tbc tbe tbj tbo tbp tbr tbt tbv tca tcb tcc tce tcj tco tcp tcr tct tcv te- tea teb tec tee tej teo tep ter tet tev tjc tje tjo tjp tjr to- toa tob toc toe toj too top tor tot tov tpa tpb tpc tpe tpj tpo tpp tpr tpt tpv tra trb trc tre tro trp trr trt trv tta ttb ttc tte tto ttp ttr ttt ttv tva tvb tvc tve tvo tvp tvr tvt v-a v-e vaa vab vac vae vaj vao vap var vat vav vba vbc vbo vbr vbv vca vcc vce vco vcp vcr vct vea veb vec vee veo vep ver vet vja voa vob voc voe voo vop vor vot vov vpa vpb vpc vpe vpo vpp vpr vpt vra vrb vrc vre vrp vrr vrt vta vtb vtc vte vto vtr vtt vtv vva vvb vvc vvo vvr vvt vvv