-al -ol a-a a-b a-t aaa aab aaf aal aao aap aar aat ab- aba abb abf abl abo abp abr abt af- afa afb aff afl afo afp afr aft al- ala alb alf all alo alp alr alt aoa aob aof aol aoo aop aor aot ap- apa apb apf apl apo app apr apt ar- ara arb arf arl aro arp arr art at- ata atb atf atl ato atp atr att b-p baa bab baf bal bao bap bar bat bba bbb bbf bbl bbo bbp bbr bbt bfa bfb bff bfl bfo bfp bfr bft bla blb blf bll blo blp blr blt boa bob bof bol boo bop bor bot bpa bpb bpf bpl bpo bpp bpr bpt bra brb brf brl bro brp brr brt bta btb btf btl bto btp btr btt faa fab faf fal fao fap far fat fba fbb fbf fbl fbo fbp fbr fbt ffa fff ffl ffo ffp ffr fft fla flb flf fll flo flp flr flt foa fob fof fol foo fop for fot fpa fpb fpl fpo fpp fpr fpt fra frb frf frl fro frp frr frt fta ftb ftf ftl fto ftp ftr ftt l-p la- laa lab laf lal lao lap lar lat lba lbb lbf lbl lbo lbp lbr lbt lfa lfb lff lfl lfo lfp lfr lft lla llb llf lll llo llp llr llt loa lob lof lol loo lop lor lot lpa lpb lpf lpl lpo lpp lpr lpt lra lrb lrf lro lrp lrr lrt lta ltb ltf ltl lto ltp ltr ltt oaa oab oaf oal oao oap oar oat ob- oba obb obf obl obo obp obr obt of- ofa ofb off ofl ofo ofp ofr oft ola olb olf oll olo olp olt oo- ooa oob oof ool ooo oop oor oot op- opa opb opf opl opo opp opr opt or- ora orb orf orl oro orp orr ort ot- ota otb otf otl oto otp otr ott p-p paa pab paf pal pao pap par pat pba pbb pbf pbl pbo pbp pbr pbt pfa pfb pff pfl pfo pfp pfr pft pla plb plf pll plo plp plr plt poa pob pof pol poo pop por pot ppa ppb ppf ppl ppo ppp ppr ppt pra prb prf prl pro prp prr prt pt- pta ptb ptf ptl pto ptp ptr ptt ra- raa rab raf ral rao rap rar rat rba rbb rbf rbl rbo rbp rbr rbt rfa rfb rff rfl rfo rfp rfr rft rla rlf rll rlo rlp rlr rlt roa rob rof rol roo rop ror rot rpa rpb rpf rpl rpo rpp rpr rpt rra rrb rrf rrl rrp rrr rrt rta rtb rtf rtl rto rtp rtr rtt taa tab taf tal tao tap tar tat tba tbb tbf tbl tbo tbp tbr tbt tfa tfb tff tfl tfo tfp tfr tft tla tlf tll tlo tlp tlr tlt to- toa tob tof tol too top tor tot tpa tpb tpf tpl tpo tpp tpr tpt tra trb trf trl tro trp trr trt tta ttb ttf ttl tto ttp ttr ttt