-al -er -ol a-a a-b aaa aab aae aah aal aao aap aar ab- aba abb abe abh abl abo abp abr aea aeb aee aeh ael aeo aep aer aha ahb ahe ahh ahl aho ahp ahr al- ala alb ale alh all alo alp alr aoa aob aoe aoh aol aoo aop aor ap- apa apb ape aph apl apo app apr ar- ara arb are arh arl aro arp arr b-p baa bab bae bah bal bao bap bar bba bbb bbe bbh bbl bbo bbp bbr be- bea beb bee beh bel beo bep ber bha bhb bhe bhh bhl bho bhp bhr bla blb ble blh bll blo blp blr boa bob boe boh bol boo bop bor bpa bpb bpe bph bpl bpo bpp bpr bra brb bre brh brl bro brp brr eaa eab eae eah eal eao eap ear eba ebb ebe ebh ebl ebo ebp ebr eea eeb eee eel eeo eep eer eha ehb ehe ehh ehl eho ehp ehr ela elb ele elh ell elo elp elr eo- eoa eob eoe eoh eol eoo eop eor ep- epa epb epe eph epl epo epp epr era erb ere erh erl ero erp err haa hab hae hah hal hao hap har hba hbb hbe hbh hbl hbo hbp hbr he- hea heb hee heh hel heo hep her hha hhb hhe hhh hhl hho hhp hhr hla hlb hle hlh hll hlo hlp hlr hoa hob hoe hoh hol hoo hop hor hpa hpb hpe hph hpl hpo hpp hpr hr- hra hrb hre hrh hrl hro hrp hrr l-p la- laa lab lae lah lal lao lap lar lba lbb lbe lbh lbl lbo lbp lbr lea leb lee leh lel leo lep ler lha lhb lhh lho lhp lhr lla llb lle lll llo llp llr loa lob loe loh lol loo lop lor lpa lpb lpe lph lpl lpo lpp lpr lra lrb lrh lro lrp lrr oaa oab oae oah oal oao oap oar ob- oba obb obe obh obl obo obp obr oea oeb oee oeh oel oeo oep oer oha ohe ohh ohl oho ohp ohr ola olb ole oll olo olp oo- ooa oob ooh ool ooo oop oor op- opa opb ope oph opl opo opp opr or- ora orb ore orh orl oro orp orr p-p paa pab pae pah pal pao pap par pba pbb pbe pbl pbo pbp pbr pea peb pee peh pel peo pep per pha phb phe phl pho php phr pla plb ple plh pll plo plp plr poa pob poe poh pol poo pop por ppa ppb ppe pph ppl ppo ppp ppr pra prb pre prh prl pro prp prr ra- raa rab rae rah ral rao rap rar rba rbb rbe rbh rbl rbo rbp rbr re- rea reb ree reh rel reo rep rer rh- rha rhb rhe rhh rhl rho rhp rhr rla rle rlh rll rlo rlp rlr roa rob roe roh rol roo rop ror rpa rpb rpe rph rpl rpo rpp rpr rra rrb rrh rrl rrp rrr