-al -er -ol a-a a-b a-i aaa aab aae aaf aai aal aao aap aar aas ab- aba abb abe abf abi abl abo abp abr abs aea aeb aee aef aei ael aeo aep aer aes af- afa afb afe aff afi afl afo afp afr afs ai- aia aib aie aif aii ail aio aip air ais al- ala alb ale alf ali all alo alp alr als aoa aob aoe aof aoi aol aoo aop aor aos ap- apa apb ape apf api apl apo app apr aps ar- ara arb are arf ari arl aro arp arr ars as- asa asb ase asf asi asl aso asp asr ass b-p baa bab bae baf bai bal bao bap bar bas bba bbb bbe bbf bbi bbl bbo bbp bbr bbs be- bea beb bee bef bei bel beo bep ber bes bfa bfb bfe bff bfi bfl bfo bfp bfr bfs bi- bia bib bie bif bii bil bio bip bir bis bla blb ble blf bli bll blo blp blr bls boa bob boe bof boi bol boo bop bor bos bpa bpb bpe bpf bpi bpl bpo bpp bpr bps bra brb bre brf bri brl bro brp brr brs bsa bsb bse bsf bsi bsl bso bsp bsr bss eaa eab eae eaf eai eal eao eap ear eas eba ebb ebe ebf ebi ebl ebo ebp ebr ebs eea eeb eee eef eel eeo eep eer ees ef- efa efb efe eff efi efl efo efp efr efs eia eib eie eif eii eil eio eip eir eis ela elb ele elf eli ell elo elp elr els eo- eoa eob eoe eof eoi eol eoo eop eor eos ep- epa epb epe epf epi epl epo epp epr eps era erb ere erf eri erl ero erp err ers es- esa esb ese esf esi esl eso esp esr ess faa fab fae faf fai fal fao fap far fas fba fbb fbe fbf fbi fbl fbo fbp fbr fbs fea feb fee fef fei fel feo fep fer fes ffa ffe fff ffi ffl ffo ffp ffr ffs fia fib fie fif fii fil fip fir fis fla flb fle flf fli fll flo flp flr fls foa fob foe fof foi fol foo fop for fos fpa fpb fpe fpi fpl fpo fpp fpr fps fra frb fre frf fri frl fro frp frr frs fsa fsb fse fsf fsi fsl fso fsp fsr fss i-f ia- iaa iab iae iaf iai ial iao iap iar ias iba ibb ibe ibf ibi ibl ibo ibp ibr ibs ie- iea iee ief iei iel iep ier ies ifa ifb ife iff ifi ifl ifo ifp ifr ifs iia iib iie iif iii iil iio iip iir iis il- ila ilb ile ilf ili ill ilo ilp ilr ils io- ioa iob ioe iof ioi iol ioo iop ior ios ipa ipb ipe ipf ipi ipl ipo ipp ipr ips ir- ira irb ire irf iri irl iro irp irr irs is- isa isb ise isf isi isl iso isp isr iss l-p la- laa lab lae laf lai lal lao lap lar las lba lbb lbe lbf lbi lbl lbo lbp lbr lbs lea leb lee lef lei lel leo lep ler les lfa lfb lfe lff lfi lfl lfo lfp lfr lfs lia lib lie lif lii lil lio lip lir lis lla llb lle llf lli lll llo llp llr lls loa lob loe lof loi lol loo lop lor los lpa lpb lpe lpf lpi lpl lpo lpp lpr lps lra lrb lrf lri lro lrp lrr lrs lsa lsb lse lsf lsi lsl lso lsp lsr lss o-i oaa oab oae oaf oai oal oao oap oar oas ob- oba obb obe obf obi obl obo obp obr obs oea oeb oee oef oei oel oeo oep oer oes of- ofa ofb ofe off ofi ofl ofo ofp ofr ofs oia oib oie oif oii oil oio oip oir ois ola olb ole olf oli oll olo olp ols oo- ooa oob oof ooi ool ooo oop oor oos op- opa opb ope opf opi opl opo opp opr ops or- ora orb ore orf ori orl oro orp orr ors os- osa osb ose osf osi osl oso osp osr oss p-p paa pab pae paf pai pal pao pap par pas pba pbb pbe pbf pbi pbl pbo pbp pbr pbs pea peb pee pef pei pel peo pep per pes pfa pfb pfe pff pfi pfl pfo pfp pfr pfs pia pib pie pif pii pil pio pip pir pis pla plb ple plf pli pll plo plp plr pls poa pob poe pof poi pol poo pop por pos ppa ppb ppe ppf ppi ppl ppo ppp ppr pps pra prb pre prf pri prl pro prp prr prs ps- psa psb pse psf psi psl pso psp psr pss ra- raa rab rae raf rai ral rao rap rar ras rba rbb rbe rbf rbi rbl rbo rbp rbr rbs re- rea reb ree ref rei rel reo rep rer res rfa rfb rfe rff rfi rfl rfo rfp rfr rfs ria rib rie rif rii ril rio rip rir ris rla rle rlf rli rll rlo rlp rlr rls roa rob roe rof roi rol roo rop ror ros rpa rpb rpe rpf rpi rpl rpo rpp rpr rps rra rrb rrf rri rrl rrp rrr rrs rsa rsb rse rsf rsi rsl rso rsp rsr rss saa sab sae saf sai sal sao sap sar sas sba sbb sbe sbf sbi sbl sbo sbp sbr sbs se- sea seb see sef sei sel seo sep ser ses sfa sfb sfe sff sfi sfl sfo sfp sfr sfs sia sib sie sif sii sil sio sip sir sis sla slb sle slf sli sll slo slp slr sls soa sob soe sof soi sol soo sop sor sos spa spb