-al -er -ic -ol a-a a-b a-c a-i aaa aab aac aae aai aal aao aap aar aas ab- aba abb abc abe abi abl abo abp abr abs ac- aca acb acc ace aci acl aco acp acr acs aea aeb aec aee aei ael aeo aep aer aes ai- aia aib aic aie aii ail aio aip air ais al- ala alb alc ale ali all alo alp alr als aoa aob aoc aoe aoi aol aoo aop aor aos ap- apa apb apc ape api apl apo app apr aps ar- ara arb arc are ari arl aro arp arr ars as- asa asb asc ase asi asl aso asp asr ass b-p baa bab bac bae bai bal bao bap bar bas bba bbb bbc bbe bbi bbl bbo bbp bbr bbs bca bcb bcc bce bci bcl bco bcp bcr bcs be- bea beb bec bee bei bel beo bep ber bes bi- bia bib bic bie bii bil bio bip bir bis bla blb blc ble bli bll blo blp blr bls boa bob boc boe boi bol boo bop bor bos bpa bpb bpc bpe bpi bpl bpo bpp bpr bps bra brb bre bri brl bro brp brr brs bsa bsb bsc bse bsi bsl bso bsp bsr bss c-- caa cab cac cae cai cal cao cap car cas cba cbb cbc cbe cbi cbl cbo cbp cbr cbs cca ccb ccc cce cci ccl cco ccp ccr ccs ce- cea ceb cec cee cei cel ceo cep cer ces ci- cia cib cic cie cii cil cio cip cir cis cl- cla clb clc cle cli cll clo clp clr cls co- coa cob coc coe coi col coo cop cor cos cpa cpb cpc cpe cpi cpl cpo cpp cpr cps cra crb crc cre cri crl cro crp crr crs csa csb csc cse csi csl cso csp csr css eaa eab eac eae eai eal eao eap ear eas eba ebb ebc ebe ebi ebl ebo ebp ebr ebs ec- eca ecb ecc ece eci ecl eco ecr ecs eea eeb eec eee eel eeo eep eer ees eia eib eic eie eii eil eio eip eir eis ela elb elc ele eli ell elo elp elr els eo- eoa eob eoc eoe eoi eol eoo eop eor eos ep- epa epb epc epe epi epl epo epp epr eps era erb erc ere eri erl ero erp err ers es- esa esb esc ese esi esl eso esp esr ess ia- iaa iab iac iae iai ial iao iap iar ias iba ibb ibc ibe ibi ibl ibo ibp ibr ibs ica icb icc ice ici icl ico icp icr ics ie- iea iec iee iei iel iep ier ies iia iib iic iie iii iil iio iip iir iis il- ila ilb ilc ile ili ill ilo ilp ilr ils io- ioa iob ioc ioe ioi iol ioo iop ior ios ipa ipb ipc ipe ipi ipl ipo ipp ipr ips ir- ira irb irc ire iri irl iro irp irr irs is- isa isb isc ise isi isl iso isp isr iss l-p la- laa lab lac lae lai lal lao lap lar las lba lbb lbc lbe lbi lbl lbo lbp lbr lbs lca lcb lcc lce lci lcl lco lcp lcr lcs lea leb lec lee lei lel leo lep ler les lia lib lic lie lii lil lio lip lir lis lla llb llc lle lli lll llo llp llr lls loa lob loc loe loi lol loo lop lor los lpa lpb lpc lpe lpi lpl lpo lpp lpr lps lra lrb lrc lri lro lrp lrr lrs lsa lsb lsc lse lsi lsl lso lsp lsr lss o-i oaa oab oac oae oai oal oao oap oar oas ob- oba obb obc obe obi obl obo obp obr obs oc- oca ocb occ oci ocl oco ocp ocr ocs oea oeb oec oee oei oel oeo oep oer oes oia oib oic oie oii oil oio oip oir ois ola olb olc ole oli oll olo olp ols oo- ooa oob ooc ooi ool ooo oop oor oos op- opa opb opc ope opi opl opo opp opr ops or- ora orb orc ore ori orl oro orp orr ors os- osa osb osc ose osi osl oso osp osr oss p-p paa pab pac pae pai pal pao pap par pas pba pbb pbc pbe pbi pbl pbo pbp pbr pbs pca pcb pcc pce pci pcl pco pcp pcr pcs pea peb pec pee pei pel peo pep per pes pia pib pic pie pii pil pio pip pir pis pla plb plc ple pli pll plo plp plr pls poa pob poc poe poi pol poo pop por pos ppa ppb ppc ppe ppi ppl ppo ppp ppr pps pra prb prc pre pri prl pro prp prr prs ps- psa psb psc pse psi psl pso psp psr pss ra- raa rab rac rae rai ral rao rap rar ras rba rbb rbc rbe rbi rbl rbo rbp rbr rbs rca rcb rcc rce rci rcl rco rcp rcr rcs re- rea reb rec ree rei rel reo rep rer res ria rib ric rie rii ril rio rip rir ris rla rlc rle rli rll rlo rlp rlr rls roa rob roc roe roi rol roo rop ror ros rpa rpb rpc rpe rpi rpl rpo rpp rpr rps rra rrb rrc rri rrl rrp rrr rrs rsa rsb rsc rse rsi rsl rso rsp rsr rss saa sab sac sae sai sal sao sap sar sas sba sbb sbc sbe sbi sbl sbo sbp sbr sbs sca scb scc sce sci scl sco scp scr scs se- sea seb sec see sei sel seo sep ser ses sia sib sic sie sii sil sio sip sir sis sla slb slc sle sli sll slo slp slr sls soa sob soc soe soi sol