-al -ol a-a a-b a-i a-t aaa aab aai aal aan aao aap aar aat ab- aba abb abi abl abn abo abp abr abt ai- aia aib aii ail ain aio aip air ait al- ala alb ali all aln alo alp alr alt an- ana anb ani anl ann ano anp anr ant aoa aob aoi aol aon aoo aop aor aot ap- apa apb api apl apn apo app apr apt ar- ara arb ari arl arn aro arp arr art at- ata atb ati atl atn ato atp atr att b-p baa bab bai bal ban bao bap bar bat bba bbb bbi bbl bbn bbo bbp bbr bbt bi- bia bib bii bil bin bio bip bir bit bla blb bli bll bln blo blp blr blt bna bnb bni bnl bnn bno bnp bnr bnt boa bob boi bol bon boo bop bor bot bpa bpb bpi bpl bpn bpo bpp bpr bpt bra brb bri brl brn bro brp brr brt bta btb bti btl btn bto btp btr btt ia- iaa iab iai ial ian iao iap iar iat iba ibb ibi ibl ibn ibo ibp ibr ibt iia iib iii iil iin iio iip iir iit il- ila ilb ili ill iln ilo ilp ilr ilt in- ina inb ini inl inn ino inp inr int io- ioa iob ioi iol ion ioo iop ior iot ipa ipb ipi ipl ipn ipo ipp ipr ipt ir- ira irb iri irl irn iro irp irr irt ita itb iti itl itn ito itp itt l-p la- laa lab lai lal lan lao lap lar lat lba lbb lbi lbl lbo lbp lbr lbt lia lib lii lil lin lio lip lir lit lla llb lli lll lln llo llp llr llt lna lnb lni lnl lnn lno lnp lnr lnt loa lob loi lol lon loo lop lor lot lpa lpb lpi lpl lpn lpo lpp lpr lpt lra lrb lri lrn lro lrp lrr lrt lta ltb lti ltl lto ltp ltr ltt n-i naa nab nai nal nan nao nap nar nat nba nbb nbi nbl nbn nbo nbp nbr nbt nia nib nii nil nin nio nip nir nit nla nlb nli nll nln nlo nlp nlr nlt nna nnb nni nnl nnn nno nnp nnt no- noa nob noi nol non noo nop nor not npa npb npi npl npn npo npp npr npt nra nrb nri nrl nrn nro nrp nrr nrt nta ntb nti ntn nto ntp ntr ntt o-i oaa oab oai oal oan oao oap oar oat ob- oba obb obi obl obn obo obp obr obt oia oib oii oil oin oio oip oir oit ola olb oli oll oln olo olp olt on- ona onb oni onl onn ono onp onr ont oo- ooa oob ooi ool oon ooo oop oor oot op- opa opb opi opl opn opo opp opr opt or- ora orb ori orl orn oro orp orr ort ot- ota otb oti otl otn oto otp otr ott p-p paa pab pai pal pan pao pap par pat pba pbb pbi pbl pbn pbo pbp pbr pbt pia pib pii pil pin pio pip pir pit pla plb pli pll pln plo plp plr plt pn- pna pnb pni pnl pnn pno pnp pnr pnt poa pob poi pol pon poo pop por pot ppa ppb ppi ppl ppn ppo ppp ppr ppt pra prb pri prl prn pro prp prr prt pt- pta ptb pti ptl ptn pto ptp ptr ptt ra- raa rab rai ral ran rao rap rar rat rba rbb rbi rbl rbn rbo rbp rbr rbt ria rib rii ril rin rio rip rir rit rla rli rll rln rlo rlp rlr rlt rna rnb rni rnn rno rnp rnr rnt roa rob roi rol ron roo rop ror rot rpa rpb rpi rpl rpn rpo rpp rpr rpt rra rrb rri rrl rrn rrp rrr rrt rta rtb rti rtl rtn rto rtp rtr rtt taa tab tai tal tan tao tap tar tat tba tbb tbi tbl tbn tbo tbp tbr tbt tia tib tii til tin tio tip tir tit tla tli tll tln tlo tlp tlr tlt tna tnb tni tnl tnn tno tnp tnr tnt to- toa tob toi tol ton too top tor tot tpa tpb tpi tpl tpn tpo tpp tpr tpt tra trb tri trl trn tro trp trr trt tta ttb tti ttl ttn tto ttp ttr ttt