-al -er -ol a-a a-b a-c aaa aab aac aae aaf aah aak aal aao aap aar ab- aba abb abc abe abf abh abk abl abo abp abr ac- aca acb acc ace acf ach ack acl aco acp acr aea aeb aec aee aef aeh aek ael aeo aep aer af- afa afb afc afe aff afh afk afl afo afp afr aha ahb ahc ahe ahf ahh ahk ahl aho ahp ahr aka akb akc ake akh akk akl ako akp akr al- ala alb alc ale alf alh alk all alo alp alr aoa aob aoc aoe aof aoh aok aol aoo aop aor ap- apa apb apc ape apf aph apk apl apo app apr ar- ara arb arc are arf arh ark arl aro arp arr b-p baa bab bac bae baf bah bak bal bao bap bar bba bbb bbc bbe bbf bbh bbk bbl bbo bbp bbr bca bcb bcc bce bcf bch bck bcl bco bcp bcr be- bea beb bec bee bef beh bek bel beo bep ber bfa bfb bfc bfe bff bfh bfl bfo bfp bfr bha bhb bhc bhe bhf bhh bhk bhl bho bhp bhr bka bkb bkc bke bkf bkk bkl bko bkp bkr bla blb blc ble blf blh blk bll blo blp blr boa bob boc boe bof boh bok bol boo bop bor bpa bpb bpc bpe bpf bph bpl bpo bpp bpr bra brb bre brf brh brk brl bro brp brr c-- caa cab cac cae caf cah cak cal cao cap car cba cbb cbc cbe cbf cbh cbk cbl cbo cbp cbr cca ccb ccc cce ccf cch cck ccl cco ccp ccr ce- cea ceb cec cee cef ceh cek cel ceo cep cer cfa cfb cfc cfe cff cfh cfk cfl cfo cfp cfr ch- cha chb chc che chf chh chk chl cho chp chr cka ckb ckc ckh cko cl- cla clb clc cle clf clh clk cll clo clp clr co- coa cob coc coe cof coh cok col coo cop cor cpa cpb cpc cpe cpf cph cpk cpl cpo cpp cpr cra crb crc cre crf crh crk crl cro crp crr eaa eab eac eae eaf eah eak eal eao eap ear eba ebb ebc ebe ebf ebh ebk ebl ebo ebp ebr ec- eca ecb ecc ece ecf ech eck ecl eco ecr eea eeb eec eee eef eek eel eeo eep eer ef- efa efb efc efe eff efh efl efo efp efr eha ehb ehc ehe ehf ehh ehl eho ehp ehr eka ekb ekc eke ekf ekh ekl eko ekp ekr ela elb elc ele elf elh elk ell elo elp elr eo- eoa eob eoc eoe eof eoh eok eol eoo eop eor ep- epa epb epc epe epf eph epl epo epp epr era erb erc ere erf erh erk erl ero erp err faa fab fac fae faf fah fak fal fao fap far fba fbb fbc fbe fbf fbh fbk fbl fbo fbp fbr fca fcb fcc fce fcf fck fcl fco fcp fcr fea feb fec fee fef feh fek fel feo fep fer ffa ffc ffe fff ffh ffk ffl ffo ffp ffr fha fhb fhc fhe fhf fhh fhl fho fhp fhr fka fkb fkc fkf fkk fkl fkp fla flb flc fle flf fll flo flp flr foa fob foc foe fof foh fok fol foo fop for fpa fpb fpc fpe fph fpk fpl fpo fpp fpr fra frb frc fre frf frh frk frl fro frp frr haa hab hac hae haf hah hak hal hao hap har hba hbb hbc hbe hbf hbh hbk hbl hbo hbp hbr hca hcb hcc hce hcf hch hck hcl hco hcp hcr he- hea heb hec hee hef heh hek hel heo hep her hfa hfb hfc hfe hff hfh hfk hfl hfo hfp hfr hha hhb hhc hhe hhf hhh hhk hhl hho hhp hhr hka hkb hkf hkh hkk hkl hko hkp hkr hla hlb hlc hle hlf hlh hll hlo hlp hlr hoa hob hoc hoe hof hoh hok hol hoo hop hor hpa hpb hpc hpe hpf hph hpk hpl hpo hpp hpr hr- hra hrb hrc hre hrf hrh hrk hrl hro hrp hrr ka- kaa kab kac kae kaf kah kak kal kao kap kar kba kbb kbc kbe kbf kbh kbk kbl kbo kbp kbr kca kcb kcc kce kch kck kcl kcp kcr ke- kea keb kec kee kef keh kek kel keo kep ker kfa kfc kff kfh kfo kha khe khf khh khk kho khr kkb kkc kke kkh kkk kkl kkp kkr kl- kla klb klc klf klh klo klr koa kob koc koe kof koh kok kol koo kop kor kpa kpc kpe kpf kph kpk kpl kpo kpp kpr kra krc krf krk krl kro krp krr l-p la- laa lab lac lae laf lah lak lal lao lap lar lba lbb lbc lbe lbf lbh lbk lbl lbo lbp lbr lca lcb lcc lce lcf lch lck lcl lco lcp lcr lea leb lec lee lef leh lek lel leo lep ler lfa lfb lfc lfe lff lfh lfk lfl lfo lfp lfr lha lhb lhc lhf lhh lhk lho lhp lhr lka lkb lkh lkl lkp lkr lla llb llc lle llf llk lll llo llp llr loa lob loc loe lof loh lok lol loo lop lor lpa lpb lpc lpe lpf lph lpk lpl lpo lpp lpr lra lrb lrc lrf lrh lrk lro lrp lrr oaa oab oac oae oaf oah oak oal oao oap oar ob- oba obb obc obe obf obh obk obl obo obp obr oc- oca ocb occ ocf och ock ocl oco ocp ocr oea oeb oec oee oef oeh oel oeo oep oer of- ofa ofb ofc ofe off ofl ofo ofp ofr oha ohc ohe ohf ohh ohl oho ohp ohr oka okb