-al -er -ol a-a a-b a-c aaa aab aac aad aae aal aao aap aar ab- aba abb abc abd abe abl abo abp abr ac- aca acb acc acd ace acl aco acp acr ad- ada adb adc add ade adl ado adp adr aea aeb aec aed aee ael aeo aep aer al- ala alb alc ald ale all alo alp alr aoa aob aoc aod aoe aol aoo aop aor ap- apa apb apc apd ape apl apo app apr ar- ara arb arc ard are arl aro arp arr b-p baa bab bac bad bae bal bao bap bar bba bbb bbc bbd bbe bbl bbo bbp bbr bca bcb bcc bcd bce bcl bco bcp bcr bda bdb bdc bdd bde bdl bdo bdp bdr be- bea beb bec bed bee bel beo bep ber bla blb blc bld ble bll blo blp blr boa bob boc bod boe bol boo bop bor bpa bpb bpc bpd bpe bpl bpo bpp bpr bra brb brd bre brl bro brp brr c-- caa cab cac cad cae cal cao cap car cba cbb cbc cbd cbe cbl cbo cbp cbr cca ccb ccc ccd cce ccl cco ccp ccr cda cdb cdc cdd cde cdl cdo cdp cdr ce- cea ceb cec ced cee cel ceo cep cer cl- cla clb clc cld cle cll clo clp clr co- coa cob coc cod coe col coo cop cor cpa cpb cpc cpd cpe cpl cpo cpp cpr cra crb crc crd cre crl cro crp crr daa dab dac dad dae dal dao dap dar dba dbb dbc dbd dbe dbl dbo dbp dbr dca dcb dcc dcd dce dcl dco dcp dcr dda ddb ddc ddd dde ddl ddo ddp ddr de- dea deb dec ded dee del deo dep der dl- dla dlb dlc dld dle dll dlo dlp dlr doa dob doc dod doe dol doo dop dor dpa dpb dpc dpd dpe dpl dpo dpp dpr dra drb drc drd dre drl dro drp drr eaa eab eac ead eae eal eao eap ear eba ebb ebc ebd ebe ebl ebo ebp ebr ec- eca ecb ecc ecd ece ecl eco ecr ed- eda edb edc edd ede edl edo edp edr eea eeb eec eed eee eel eeo eep eer ela elb elc eld ele ell elo elp elr eo- eoa eob eoc eod eoe eol eoo eop eor ep- epa epb epc epd epe epl epo epp epr era erb erc erd ere erl ero erp err l-p la- laa lab lac lad lae lal lao lap lar lba lbb lbc lbd lbe lbl lbo lbp lbr lca lcb lcc lcd lce lcl lco lcp lcr lda ldb ldc ldd lde ldl ldo ldp ldr lea leb lec led lee lel leo lep ler lla llb llc lld lle lll llo llp llr loa lob loc lod loe lol loo lop lor lpa lpb lpc lpd lpe lpl lpo lpp lpr lra lrb lrc lrd lro lrp lrr oaa oab oac oad oae oal oao oap oar ob- oba obb obc obd obe obl obo obp obr oc- oca ocb occ ocd ocl oco ocp ocr oda odb odc odd ode odl odo odp odr oea oeb oec oed oee oel oeo oep oer ola olb olc old ole oll olo olp oo- ooa oob ooc ood ool ooo oop oor op- opa opb opc opd ope opl opo opp opr or- ora orb orc ord ore orl oro orp orr p-p paa pab pac pad pae pal pao pap par pba pbb pbc pbd pbe pbl pbo pbp pbr pca pcb pcc pcd pce pcl pco pcp pcr pda pdb pdc pdd pde pdl pdo pdp pdr pea peb pec ped pee pel peo pep per pla plb plc pld ple pll plo plp plr poa pob poc pod poe pol poo pop por ppa ppb ppc ppd ppe ppl ppo ppp ppr pra prb prc prd pre prl pro prp prr ra- raa rab rac rad rae ral rao rap rar rba rbb rbc rbd rbe rbl rbo rbp rbr rca rcb rcc rcd rce rcl rco rcp rcr rda rdb rdc rdd rde rdl rdo rdp rdr re- rea reb rec red ree rel reo rep rer rla rlc rld rle rll rlo rlp rlr roa rob roc rod roe rol roo rop ror rpa rpb rpc rpd rpe rpl rpo rpp rpr rra rrb rrc rrd rrl rrp rrr