-al -ol a-a a-b a-i aaa aab aae aah aai aal aao aap aax ab- aba abb abe abh abi abl abo abp abx aea aeb aee aeh aei ael aeo aep aex aha ahb ahe ahh ahi ahl aho ahp ahx ai- aia aib aie aih aii ail aio aip aix al- ala alb ale alh ali all alo alp alx aoa aob aoe aoh aoi aol aoo aop aox ap- apa apb ape aph api apl apo app apx ax- axa axe axh axi axl axo axp axx b-p baa bab bae bah bai bal bao bap bax bba bbb bbe bbh bbi bbl bbo bbp bbx be- bea beb bee beh bei bel beo bep bex bha bhb bhe bhh bhi bhl bho bhp bhx bi- bia bib bie bih bii bil bio bip bix bla blb ble blh bli bll blo blp blx boa bob boe boh boi bol boo bop box bpa bpb bpe bph bpi bpl bpo bpp bpx bxb bxi bxl bxo bxx eaa eab eae eah eai eal eao eap eax eba ebb ebe ebh ebi ebl ebo ebp ebx eea eeb eee eel eeo eep eex eha ehb ehe ehh ehi ehl eho ehp eia eib eie eii eil eio eip eix ela elb ele elh eli ell elo elp elx eo- eoa eob eoe eoh eoi eol eoo eop ep- epa epb epe eph epi epl epo epp epx ex- exa exe exh exi exl exo exp exx h-i haa hab hae hah hai hal hao hap hax hba hbb hbe hbh hbi hbl hbo hbp hbx he- hea heb hee heh hei hel heo hep hex hha hhb hhe hhh hhi hhl hho hhp hia hib hie hih hii hil hio hip hix hla hlb hle hlh hli hll hlo hlp hlx hoa hob hoe hoh hoi hol hoo hop hox hpa hpb hpe hph hpi hpl hpo hpp hxl ia- iaa iab iae iah iai ial iao iap iba ibb ibe ibh ibi ibl ibo ibp ibx ie- iea iee iei iel iep iex iha ihb ihe ihh ihi ihl iho ihp iia iib iie iih iii iil iio iip iix il- ila ilb ile ilh ili ill ilo ilp ilx io- ioa iob ioe ioh ioi iol ioo iop ipa ipb ipe ipi ipl ipo ipp ipx ixe ixi ixl l-p la- laa lab lae lah lai lal lao lap lax lba lbb lbe lbh lbi lbl lbo lbp lbx lea leb lee leh lei lel leo lep lex lha lhb lhh lhi lho lhp lhx lia lib lie lih lii lil lio lip lix lla llb lle lli lll llo llp loa lob loe loh loi lol loo lop lox lpa lpb lpe lph lpi lpl lpo lpp lpx lxi lxo lxx o-i oaa oab oae oah oai oal oao oap oax ob- oba obb obe obh obi obl obo obp obx oea oeb oee oeh oei oel oeo oep oex oha ohe ohh ohi ohl oho ohp oia oib oie oii oil oio oip ola olb ole oli oll olo olp oo- ooa oob ooh ooi ool ooo oop oox op- opa opb ope oph opi opl opo opp opx ox- oxa oxb oxi oxo oxx p-p paa pab pae pah pai pal pao pap pax pba pbb pbe pbi pbl pbo pbp pbx pea peb pee peh pei pel peo pep pex pha phb phe phi phl pho php phx pia pib pie pih pii pil pio pip pix pla plb ple plh pli pll plo plp plx poa pob poe poh poi pol poo pop pox ppa ppb ppe pph ppi ppl ppo ppp ppx pxe pxl xaa xal xap xbe xbl xbx xee xel xep xex xhp xia xie xii xio xix xla xlb xli xoa xoi xoo xop xox xpa xpb xpe xpl xpo xpp xxi xxl xxo xxp xxx