-al -er -ol a-a a-b a-i aaa aab aae aai aal aao aap aar ab- aba abb abe abi abl abo abp abr aea aeb aee aei ael aeo aep aer ai- aia aib aie aii ail aio aip air al- ala alb ale ali all alo alp alr aoa aob aoe aoi aol aoo aop aor ap- apa apb ape api apl apo app apr ar- ara arb are ari arl aro arp arr b-p baa bab bae bai bal bao bap bar bba bbb bbe bbi bbl bbo bbp bbr be- bea beb bee bei bel beo bep ber bi- bia bib bie bii bil bio bip bir bla blb ble bli bll blo blp blr boa bob boe boi bol boo bop bor bpa bpb bpe bpi bpl bpo bpp bpr bra brb bre bri brl bro brp brr eaa eab eae eai eal eao eap ear eba ebb ebe ebi ebl ebo ebp ebr eea eeb eee eel eeo eep eer eia eib eie eii eil eio eip eir ela elb ele eli ell elo elp elr eo- eoa eob eoe eoi eol eoo eop eor ep- epa epb epe epi epl epo epp epr era erb ere eri erl ero erp err ia- iaa iab iae iai ial iao iap iar iba ibb ibe ibi ibl ibo ibp ibr ie- iea iee iei iel iep ier iia iib iie iii iil iio iip iir il- ila ilb ile ili ill ilo ilp ilr io- ioa iob ioe ioi iol ioo iop ior ipa ipb ipe ipi ipl ipo ipp ipr ir- ira irb ire iri irl iro irp irr l-p la- laa lab lae lai lal lao lap lar lba lbb lbe lbi lbl lbo lbp lbr lea leb lee lei lel leo lep ler lia lib lie lii lil lio lip lir lla llb lle lli lll llo llp llr loa lob loe loi lol loo lop lor lpa lpb lpe lpi lpl lpo lpp lpr lra lrb lri lro lrp lrr o-i oaa oab oae oai oal oao oap oar ob- oba obb obe obi obl obo obp obr oea oeb oee oei oel oeo oep oer oia oib oie oii oil oio oip oir ola olb ole oli oll olo olp oo- ooa oob ooi ool ooo oop oor op- opa opb ope opi opl opo opp opr or- ora orb ore ori orl oro orp orr p-p paa pab pae pai pal pao pap par pba pbb pbe pbi pbl pbo pbp pbr pea peb pee pei pel peo pep per pia pib pie pii pil pio pip pir pla plb ple pli pll plo plp plr poa pob poe poi pol poo pop por ppa ppb ppe ppi ppl ppo ppp ppr pra prb pre pri prl pro prp prr ra- raa rab rae rai ral rao rap rar rba rbb rbe rbi rbl rbo rbp rbr re- rea reb ree rei rel reo rep rer ria rib rie rii ril rio rip rir rla rle rli rll rlo rlp rlr roa rob roe roi rol roo rop ror rpa rpb rpe rpi rpl rpo rpp rpr rra rrb rri rrl rrp rrr