-al -ol a-a a-b a-t aaa aab aal aan aao aap aas aat ab- aba abb abl abn abo abp abs abt al- ala alb all aln alo alp als alt an- ana anb anl ann ano anp ans ant aoa aob aol aon aoo aop aos aot ap- apa apb apl apn apo app aps apt as- asa asb asl asn aso asp ass ast at- ata atb atl atn ato atp ats att b-p baa bab bal ban bao bap bas bat bba bbb bbl bbn bbo bbp bbs bbt bla blb bll bln blo blp bls blt bna bnb bnl bnn bno bnp bns bnt boa bob bol bon boo bop bos bot bpa bpb bpl bpn bpo bpp bps bpt bsa bsb bsl bsn bso bsp bss bst bta btb btl btn bto btp bts btt l-p la- laa lab lal lan lao lap las lat lba lbb lbl lbo lbp lbs lbt lla llb lll lln llo llp lls llt lna lnb lnl lnn lno lnp lns lnt loa lob lol lon loo lop los lot lpa lpb lpl lpn lpo lpp lps lpt lsa lsb lsl lsn lso lsp lss lst lta ltb ltl lto ltp lts ltt naa nab nal nan nao nap nas nat nba nbb nbl nbn nbo nbp nbs nbt nla nlb nll nln nlo nlp nls nlt nna nnb nnl nnn nno nnp nns nnt no- noa nob nol non noo nop nos not npa npb npl npn npo npp nps npt nsa nsb nsl nsn nso nsp nss nst nta ntb ntn nto ntp nts ntt oaa oab oal oan oao oap oas oat ob- oba obb obl obn obo obp obs obt ola olb oll oln olo olp ols olt on- ona onb onl onn ono onp ons ont oo- ooa oob ool oon ooo oop oos oot op- opa opb opl opn opo opp ops opt os- osa osb osl osn oso osp oss ost ot- ota otb otl otn oto otp ots ott p-p paa pab pal pan pao pap pas pat pba pbb pbl pbn pbo pbp pbs pbt pla plb pll pln plo plp pls plt pn- pna pnb pnl pnn pno pnp pns pnt poa pob pol pon poo pop pos pot ppa ppb ppl ppn ppo ppp pps ppt ps- psa psb psl psn pso psp pss pst pt- pta ptb ptl ptn pto ptp pts ptt saa sab sal san sao sap sas sat sba sbb sbl sbn sbo sbp sbs sbt sla slb sll sln slo slp sls slt sna snb snl snn sno snp sns snt soa sob sol son soo sop sos sot spa spb spl spn spo spp sps spt ss- ssa ssb ssl ssn sso ssp sss sst sta stb stl stn sto stp sts stt taa tab tal tan tao tap tas tat tba tbb tbl tbn tbo tbp tbs tbt tla tll tln tlo tlp tls tlt tna tnb tnl tnn tno tnp tns tnt to- toa tob tol ton too top tos tot tpa tpb tpl tpn tpo tpp tps tpt tsa tsb tsl tsn tso tsp tss tst tta ttb ttl ttn tto ttp tts ttt