-al -er -ic -ol a-a a-b a-c a-i aaa aab aac aae aaf aai aak aal aao aap aar ab- aba abb abc abe abf abi abk abl abo abp abr ac- aca acb acc ace acf aci ack acl aco acp acr aea aeb aec aee aef aei aek ael aeo aep aer af- afa afb afc afe aff afi afk afl afo afp afr ai- aia aib aic aie aif aii aik ail aio aip air aka akb akc ake aki akk akl ako akp akr al- ala alb alc ale alf ali alk all alo alp alr aoa aob aoc aoe aof aoi aok aol aoo aop aor ap- apa apb apc ape apf api apk apl apo app apr ar- ara arb arc are arf ari ark arl aro arp arr b-p baa bab bac bae baf bai bak bal bao bap bar bba bbb bbc bbe bbf bbi bbk bbl bbo bbp bbr bca bcb bcc bce bcf bci bck bcl bco bcp bcr be- bea beb bec bee bef bei bek bel beo bep ber bfa bfb bfc bfe bff bfi bfl bfo bfp bfr bi- bia bib bic bie bif bii bik bil bio bip bir bka bkb bkc bke bkf bkk bkl bko bkp bkr bla blb blc ble blf bli blk bll blo blp blr boa bob boc boe bof boi bok bol boo bop bor bpa bpb bpc bpe bpf bpi bpl bpo bpp bpr bra brb bre brf bri brk brl bro brp brr c-- caa cab cac cae caf cai cak cal cao cap car cba cbb cbc cbe cbf cbi cbk cbl cbo cbp cbr cca ccb ccc cce ccf cci cck ccl cco ccp ccr ce- cea ceb cec cee cef cei cek cel ceo cep cer cfa cfb cfc cfe cff cfi cfk cfl cfo cfp cfr ci- cia cib cic cie cif cii cik cil cio cip cir cka ckb ckc cki cko cl- cla clb clc cle clf cli clk cll clo clp clr co- coa cob coc coe cof coi cok col coo cop cor cpa cpb cpc cpe cpf cpi cpk cpl cpo cpp cpr cra crb crc cre crf cri crk crl cro crp crr eaa eab eac eae eaf eai eak eal eao eap ear eba ebb ebc ebe ebf ebi ebk ebl ebo ebp ebr ec- eca ecb ecc ece ecf eci eck ecl eco ecr eea eeb eec eee eef eek eel eeo eep eer ef- efa efb efc efe eff efi efl efo efp efr eia eib eic eie eif eii eik eil eio eip eir eka ekb ekc eke ekf eki ekl eko ekp ekr ela elb elc ele elf eli elk ell elo elp elr eo- eoa eob eoc eoe eof eoi eok eol eoo eop eor ep- epa epb epc epe epf epi epl epo epp epr era erb erc ere erf eri erk erl ero erp err faa fab fac fae faf fai fak fal fao fap far fba fbb fbc fbe fbf fbi fbk fbl fbo fbp fbr fca fcb fcc fce fcf fci fck fcl fco fcp fcr fea feb fec fee fef fei fek fel feo fep fer ffa ffc ffe fff ffi ffk ffl ffo ffp ffr fia fib fic fie fif fii fik fil fip fir fka fkb fkc fkf fki fkk fkl fkp fla flb flc fle flf fli fll flo flp flr foa fob foc foe fof foi fok fol foo fop for fpa fpb fpc fpe fpi fpk fpl fpo fpp fpr fra frb frc fre frf fri frk frl fro frp frr i-f ia- iaa iab iac iae iaf iai ial iao iap iar iba ibb ibc ibe ibf ibi ibk ibl ibo ibp ibr ica icb icc ice icf ici ick icl ico icp icr ie- iea iec iee ief iei iek iel iep ier ifa ifb ifc ife iff ifi ifl ifo ifp ifr iia iib iic iie iif iii iil iio iip iir ika ikb ikc ike ikf iki ikk ikl iko ikr il- ila ilb ilc ile ilf ili ilk ill ilo ilp ilr io- ioa iob ioc ioe iof ioi iol ioo iop ior ipa ipb ipc ipe ipf ipi ipl ipo ipp ipr ir- ira irb irc ire irf iri irk irl iro irp irr ka- kaa kab kac kae kaf kai kak kal kao kap kar kba kbb kbc kbe kbf kbi kbk kbl kbo kbp kbr kca kcb kcc kce kci kck kcl kcp kcr ke- kea keb kec kee kef kei kek kel keo kep ker kfa kfc kff kfi kfo kia kib kic kie kif kii kik kil kio kip kir kkb kkc kke kki kkk kkl kkp kkr kl- kla klb klc klf kli klo klr koa kob koc koe kof koi kok kol koo kop kor kpa kpc kpe kpf kpi kpk kpl kpo kpp kpr kra krc krf kri krk krl kro krp krr l-p la- laa lab lac lae laf lai lak lal lao lap lar lba lbb lbc lbe lbf lbi lbk lbl lbo lbp lbr lca lcb lcc lce lcf lci lck lcl lco lcp lcr lea leb lec lee lef lei lek lel leo lep ler lfa lfb lfc lfe lff lfi lfk lfl lfo lfp lfr lia lib lic lie lif lii lik lil lio lip lir lka lkb lkl lkp lkr lla llb llc lle llf lli llk lll llo llp llr loa lob loc loe lof loi lok lol loo lop lor lpa lpb lpc lpe lpf lpi lpk lpl lpo lpp lpr lra lrb lrc lrf lri lrk lro lrp lrr o-i oaa oab oac oae oaf oai oak oal oao oap oar ob- oba obb obc obe obf obi obk obl obo obp obr oc- oca ocb occ ocf oci ock ocl oco ocp ocr oea oeb oec oee oef oei oel oeo oep oer of- ofa ofb ofc ofe off