-al -er -ol a-a a-b a-c aaa aab aac aae aah aal aao aap aar ab- aba abb abc abe abh abl abo abp abr ac- aca acb acc ace ach acl aco acp acr aea aeb aec aee aeh ael aeo aep aer aha ahb ahc ahe ahh ahl aho ahp ahr al- ala alb alc ale alh all alo alp alr aoa aob aoc aoe aoh aol aoo aop aor ap- apa apb apc ape aph apl apo app apr ar- ara arb arc are arh arl aro arp arr b-p baa bab bac bae bah bal bao bap bar bba bbb bbc bbe bbh bbl bbo bbp bbr bca bcb bcc bce bch bcl bco bcp bcr be- bea beb bec bee beh bel beo bep ber bha bhb bhc bhe bhh bhl bho bhp bhr bla blb blc ble blh bll blo blp blr boa bob boc boe boh bol boo bop bor bpa bpb bpc bpe bph bpl bpo bpp bpr bra brb bre brh brl bro brp brr c-- caa cab cac cae cah cal cao cap car cba cbb cbc cbe cbh cbl cbo cbp cbr cca ccb ccc cce cch ccl cco ccp ccr ce- cea ceb cec cee ceh cel ceo cep cer ch- cha chb chc che chh chl cho chp chr cl- cla clb clc cle clh cll clo clp clr co- coa cob coc coe coh col coo cop cor cpa cpb cpc cpe cph cpl cpo cpp cpr cra crb crc cre crh crl cro crp crr eaa eab eac eae eah eal eao eap ear eba ebb ebc ebe ebh ebl ebo ebp ebr ec- eca ecb ecc ece ech ecl eco ecr eea eeb eec eee eel eeo eep eer eha ehb ehc ehe ehh ehl eho ehp ehr ela elb elc ele elh ell elo elp elr eo- eoa eob eoc eoe eoh eol eoo eop eor ep- epa epb epc epe eph epl epo epp epr era erb erc ere erh erl ero erp err haa hab hac hae hah hal hao hap har hba hbb hbc hbe hbh hbl hbo hbp hbr hca hcb hcc hce hch hcl hco hcp hcr he- hea heb hec hee heh hel heo hep her hha hhb hhc hhe hhh hhl hho hhp hhr hla hlb hlc hle hlh hll hlo hlp hlr hoa hob hoc hoe hoh hol hoo hop hor hpa hpb hpc hpe hph hpl hpo hpp hpr hr- hra hrb hrc hre hrh hrl hro hrp hrr l-p la- laa lab lac lae lah lal lao lap lar lba lbb lbc lbe lbh lbl lbo lbp lbr lca lcb lcc lce lch lcl lco lcp lcr lea leb lec lee leh lel leo lep ler lha lhb lhc lhh lho lhp lhr lla llb llc lle lll llo llp llr loa lob loc loe loh lol loo lop lor lpa lpb lpc lpe lph lpl lpo lpp lpr lra lrb lrc lrh lro lrp lrr oaa oab oac oae oah oal oao oap oar ob- oba obb obc obe obh obl obo obp obr oc- oca ocb occ och ocl oco ocp ocr oea oeb oec oee oeh oel oeo oep oer oha ohc ohe ohh ohl oho ohp ohr ola olb olc ole oll olo olp oo- ooa oob ooc ooh ool ooo oop oor op- opa opb opc ope oph opl opo opp opr or- ora orb orc ore orh orl oro orp orr p-p paa pab pac pae pah pal pao pap par pba pbb pbc pbe pbl pbo pbp pbr pca pcb pcc pce pch pcl pco pcp pcr pea peb pec pee peh pel peo pep per pha phb phc phe phl pho php phr pla plb plc ple plh pll plo plp plr poa pob poc poe poh pol poo pop por ppa ppb ppc ppe pph ppl ppo ppp ppr pra prb prc pre prh prl pro prp prr ra- raa rab rac rae rah ral rao rap rar rba rbb rbc rbe rbh rbl rbo rbp rbr rca rcb rcc rce rch rcl rco rcp rcr re- rea reb rec ree reh rel reo rep rer rh- rha rhb rhc rhe rhh rhl rho rhp rhr rla rlc rle rlh rll rlo rlp rlr roa rob roc roe roh rol roo rop ror rpa rpb rpc rpe rph rpl rpo rpp rpr rra rrb rrc rrh rrl rrp rrr