-al -ol a-a a-b a-i aaa aab aae aai aal aao aap ab- aba abb abe abi abl abo abp aea aeb aee aei ael aeo aep ai- aia aib aie aii ail aio aip al- ala alb ale ali all alo alp aoa aob aoe aoi aol aoo aop ap- apa apb ape api apl apo app b-p baa bab bae bai bal bao bap bba bbb bbe bbi bbl bbo bbp be- bea beb bee bei bel beo bep bi- bia bib bie bii bil bio bip bla blb ble bli bll blo blp boa bob boe boi bol boo bop bpa bpb bpe bpi bpl bpo bpp eaa eab eae eai eal eao eap eba ebb ebe ebi ebl ebo ebp eea eeb eee eel eeo eep eia eib eie eii eil eio eip ela elb ele eli ell elo elp eo- eoa eob eoe eoi eol eoo eop ep- epa epb epe epi epl epo epp ia- iaa iab iae iai ial iao iap iba ibb ibe ibi ibl ibo ibp ie- iea iee iei iel iep iia iib iie iii iil iio iip il- ila ilb ile ili ill ilo ilp io- ioa iob ioe ioi iol ioo iop ipa ipb ipe ipi ipl ipo ipp l-p la- laa lab lae lai lal lao lap lba lbb lbe lbi lbl lbo lbp lea leb lee lei lel leo lep lia lib lie lii lil lio lip lla llb lle lli lll llo llp loa lob loe loi lol loo lop lpa lpb lpe lpi lpl lpo lpp o-i oaa oab oae oai oal oao oap ob- oba obb obe obi obl obo obp oea oeb oee oei oel oeo oep oia oib oie oii oil oio oip ola olb ole oli oll olo olp oo- ooa oob ooi ool ooo oop op- opa opb ope opi opl opo opp p-p paa pab pae pai pal pao pap pba pbb pbe pbi pbl pbo pbp pea peb pee pei pel peo pep pia pib pie pii pil pio pip pla plb ple pli pll plo plp poa pob poe poi pol poo pop ppa ppb ppe ppi ppl ppo ppp