-al -ol a-a a-b a-i a-t aaa aab aai aal aao aap aar aat aax ab- aba abb abi abl abo abp abr abt abx ai- aia aib aii ail aio aip air ait aix al- ala alb ali all alo alp alr alt alx aoa aob aoi aol aoo aop aor aot aox ap- apa apb api apl apo app apr apt apx ar- ara arb ari arl aro arp arr art arx at- ata atb ati atl ato atp atr att atx ax- axa axi axl axo axp axr axt axx b-p baa bab bai bal bao bap bar bat bax bba bbb bbi bbl bbo bbp bbr bbt bbx bi- bia bib bii bil bio bip bir bit bix bla blb bli bll blo blp blr blt blx boa bob boi bol boo bop bor bot box bpa bpb bpi bpl bpo bpp bpr bpt bpx bra brb bri brl bro brp brr brt brx bta btb bti btl bto btp btr btt btx bxb bxi bxl bxo bxx ia- iaa iab iai ial iao iap iar iat iba ibb ibi ibl ibo ibp ibr ibt ibx iia iib iii iil iio iip iir iit iix il- ila ilb ili ill ilo ilp ilr ilt ilx io- ioa iob ioi iol ioo iop ior iot ipa ipb ipi ipl ipo ipp ipr ipt ipx ir- ira irb iri irl iro irp irr irt irx ita itb iti itl ito itp itt itx ixi ixl l-p la- laa lab lai lal lao lap lar lat lax lba lbb lbi lbl lbo lbp lbr lbt lbx lia lib lii lil lio lip lir lit lix lla llb lli lll llo llp llr llt loa lob loi lol loo lop lor lot lox lpa lpb lpi lpl lpo lpp lpr lpt lpx lra lrb lri lro lrp lrr lrt lta ltb lti ltl lto ltp ltr ltt ltx lxi lxo lxr lxx o-i oaa oab oai oal oao oap oar oat oax ob- oba obb obi obl obo obp obr obt obx oia oib oii oil oio oip oir oit ola olb oli oll olo olp olt oo- ooa oob ooi ool ooo oop oor oot oox op- opa opb opi opl opo opp opr opt opx or- ora orb ori orl oro orp orr ort orx ot- ota otb oti otl oto otp otr ott ox- oxa oxb oxi oxo oxt oxx p-p paa pab pai pal pao pap par pat pax pba pbb pbi pbl pbo pbp pbr pbt pbx pia pib pii pil pio pip pir pit pix pla plb pli pll plo plp plr plt plx poa pob poi pol poo pop por pot pox ppa ppb ppi ppl ppo ppp ppr ppt ppx pra prb pri prl pro prp prr prt prx pt- pta ptb pti ptl pto ptp ptr ptt ptx pxl pxr pxt ra- raa rab rai ral rao rap rar rat rax rba rbb rbi rbl rbo rbp rbr rbt rbx ria rib rii ril rio rip rir rit rix rla rli rll rlo rlp rlr rlt roa rob roi rol roo rop ror rot rox rpa rpb rpi rpl rpo rpp rpr rpt rpx rra rrb rri rrl rrp rrr rrt rta rtb rti rtl rto rtp rtr rtt rtx rxp rxr t-x taa tab tai tal tao tap tar tat tax tba tbb tbi tbl tbo tbp tbr tbt tia tib tii til tio tip tir tit tix tla tli tll tlo tlp tlr tlt tlx to- toa tob toi tol too top tor tot tox tpa tpb tpi tpl tpo tpp tpr tpt tpx tra trb tri trl tro trp trr trt trx tta ttb tti ttl tto ttp ttr ttt ttx txi txl txt xaa xal xap xar xat xbl xbr xbx xia xii xio xit xix xla xlb xli xlr xlt xoa xoi xoo xop xor xot xox xpa xpb xpl xpo xpp xpt xrt xrx xti xtp xtr xtx xxi xxl xxo xxp xxx