-al -er -ol a-a a-b a-i aaa aab aae aai aal aan aao aap aar aax ab- aba abb abe abi abl abn abo abp abr abx aea aeb aee aei ael aen aeo aep aer aex ai- aia aib aie aii ail ain aio aip air aix al- ala alb ale ali all aln alo alp alr alx an- ana anb ane ani anl ann ano anp anr anx aoa aob aoe aoi aol aon aoo aop aor aox ap- apa apb ape api apl apn apo app apr apx ar- ara arb are ari arl arn aro arp arr arx ax- axa axe axi axl axn axo axp axr axx b-p baa bab bae bai bal ban bao bap bar bax bba bbb bbe bbi bbl bbn bbo bbp bbr bbx be- bea beb bee bei bel ben beo bep ber bex bi- bia bib bie bii bil bin bio bip bir bix bla blb ble bli bll bln blo blp blr blx bna bnb bne bni bnl bnn bno bnp bnr bnx boa bob boe boi bol bon boo bop bor box bpa bpb bpe bpi bpl bpn bpo bpp bpr bpx bra brb bre bri brl brn bro brp brr brx bxb bxi bxl bxn bxo bxx eaa eab eae eai eal ean eao eap ear eax eba ebb ebe ebi ebl ebn ebo ebp ebr ebx eea eeb eee eel een eeo eep eer eex eia eib eie eii eil ein eio eip eir eix ela elb ele eli ell eln elo elp elr elx en- ena enb ene eni enl enn eno enp enr eo- eoa eob eoe eoi eol eon eoo eop eor ep- epa epb epe epi epl epn epo epp epr epx era erb ere eri erl ern ero erp err ex- exa exe exi exl exo exp exr exx ia- iaa iab iae iai ial ian iao iap iar iba ibb ibe ibi ibl ibn ibo ibp ibr ibx ie- iea iee iei iel ien iep ier iex iia iib iie iii iil iin iio iip iir iix il- ila ilb ile ili ill iln ilo ilp ilr ilx in- ina inb ine ini inl inn ino inp inr inx io- ioa iob ioe ioi iol ion ioo iop ior ipa ipb ipe ipi ipl ipn ipo ipp ipr ipx ir- ira irb ire iri irl irn iro irp irr irx ixe ixi ixl ixn l-p la- laa lab lae lai lal lan lao lap lar lax lba lbb lbe lbi lbl lbo lbp lbr lbx lea leb lee lei lel len leo lep ler lex lia lib lie lii lil lin lio lip lir lix lla llb lle lli lll lln llo llp llr lna lnb lne lni lnl lnn lno lnp lnr loa lob loe loi lol lon loo lop lor lox lpa lpb lpe lpi lpl lpn lpo lpp lpr lpx lra lrb lri lrn lro lrp lrr lxi lxo lxr lxx n-i naa nab nae nai nal nan nao nap nar nax nba nbb nbe nbi nbl nbn nbo nbp nbr nbx ne- nea neb nee nei nel nen neo nep ner nex nia nib nie nii nil nin nio nip nir nix nla nlb nle nli nll nln nlo nlp nlr nlx nna nnb nne nni nnl nnn nno nnp no- noa nob noe noi nol non noo nop nor nox npa npb npe npi npl npn npo npp npr nra nrb nre nri nrl nrn nro nrp nrr nrx nxl o-i oaa oab oae oai oal oan oao oap oar oax ob- oba obb obe obi obl obn obo obp obr obx oea oeb oee oei oel oen oeo oep oer oex oia oib oie oii oil oin oio oip oir ola olb ole oli oll oln olo olp on- ona onb one oni onl onn ono onp onr onx oo- ooa oob ooi ool oon ooo oop oor oox op- opa opb ope opi opl opn opo opp opr opx or- ora orb ore ori orl orn oro orp orr orx ox- oxa oxb oxi oxn oxo oxx p-p paa pab pae pai pal pan pao pap par pax pba pbb pbe pbi pbl pbn pbo pbp pbr pbx pea peb pee pei pel pen peo pep per pex pia pib pie pii pil pin pio pip pir pix pla plb ple pli pll pln plo plp plr plx pn- pna pnb pne pni pnl pnn pno pnp pnr pnx poa pob poe poi pol pon poo pop por pox ppa ppb ppe ppi ppl ppn ppo ppp ppr ppx pra prb pre pri prl prn pro prp prr prx pxe pxl pxr ra- raa rab rae rai ral ran rao rap rar rax rba rbb rbe rbi rbl rbn rbo rbp rbr rbx re- rea reb ree rei rel ren reo rep rer rex ria rib rie rii ril rin rio rip rir rix rla rle rli rll rln rlo rlp rlr rna rnb rni rnn rno rnp rnr roa rob roe roi rol ron roo rop ror rox rpa rpb rpe rpi rpl rpn rpo rpp rpr rpx rra rrb rri rrl rrn rrp rrr rxp rxr xaa xal xan xap xar xbe xbl xbr xbx xee xel xen xep xer xex xia xie xii xin xio xix xla xlb xli xlr xna xno xoa xoi xon xoo xop xor xox xpa xpb xpe xpl xpn xpo xpp xrx xxi xxl xxo xxp xxx