-ol -up b-p b-u bbb bbc bbe bbl bbo bbp bbs bbt bbu bcb bcc bce bcl bco bcp bcs bct bcu be- beb bec bee bel beo bep bes bet beu blb blc ble bll blo blp bls blt blu bob boc boe bol boo bop bos bot bou bpb bpc bpe bpl bpo bpp bps bpt bpu bsb bsc bse bsl bso bsp bss bst bsu btb btc bte btl bto btp bts btt btu bub buc bue bul buo bup bus but buu c-- cbb cbc cbe cbl cbo cbp cbs cbt cbu ccb ccc cce ccl cco ccp ccs cct ccu ce- ceb cec cee cel ceo cep ces cet ceu cl- clb clc cle cll clo clp cls clt clu co- cob coc coe col coo cop cos cot cou cpb cpc cpe cpl cpo cpp cps cpt cpu csb csc cse csl cso csp css cst csu ctb ctc cte ctl cto ctp cts ctt ctu cub cuc cue cul cuo cup cus cut cuu ebb ebc ebe ebl ebo ebp ebs ebt ebu ec- ecb ecc ece ecl eco ecs ect ecu eeb eec eee eel eeo eep ees eet elb elc ele ell elo elp els elt elu eo- eob eoc eoe eol eoo eop eos eot eou ep- epb epc epe epl epo epp eps ept epu es- esb esc ese esl eso esp ess est esu etb etc ete etl eto etp ets ett etu eu- eub euc eue eul eup eus eut l-p lbb lbc lbe lbl lbo lbp lbs lbt lbu lcb lcc lce lcl lco lcp lcs lct lcu leb lec lee lel leo lep les let leu llb llc lle lll llo llp lls llt llu lob loc loe lol loo lop los lot lou lpb lpc lpe lpl lpo lpp lps lpt lpu lsb lsc lse lsl lso lsp lss lst lsu ltb ltc lte ltl lto ltp lts ltt ltu lub luc lue lul luo lup lus lut luu ob- obb obc obe obl obo obp obs obt obu oc- ocb occ ocl oco ocp ocs oct ocu oeb oec oee oel oeo oep oes oet olb olc ole oll olo olp ols olt olu oo- oob ooc ool ooo oop oos oot op- opb opc ope opl opo opp ops opt os- osb osc ose osl oso osp oss ost osu ot- otb otc ote otl oto otp ots ott otu ou- ouc oue oul ouo oup ous out p-p pbb pbc pbe pbl pbo pbp pbs pbt pbu pcb pcc pce pcl pco pcp pcs pct pcu peb pec pee pel peo pep pes pet peu plb plc ple pll plo plp pls plt plu pob poc poe pol poo pop pos pot pou ppb ppc ppe ppl ppo ppp pps ppt ppu ps- psb psc pse psl pso psp pss pst psu pt- ptb ptc pte ptl pto ptp pts ptt ptu pub puc pue pul pup pus put puu sbb sbc sbe sbl sbo sbp sbs sbt sbu scb scc sce scl sco scp scs sct scu se- seb sec see sel seo sep ses set seu slb slc sle sll slo slp sls slt slu sob soc soe sol soo sop sos sot sou spb spc spe spl spo spp sps spt spu ss- ssb ssc sse ssl sso ssp sss sst ssu stb stc ste stl sto stp sts stt stu sub suc sue sul suo sup sus sut suu tbb tbc tbe tbl tbo tbp tbs tbt tbu tcb tcc tce tcl tco tcp tcs tct tcu te- teb tec tee tel teo tep tes tet teu tlc tle tll tlo tlp tls tlt tlu to- tob toc toe tol too top tos tot tou tpb tpc tpe tpl tpo tpp tps tpt tpu tsb tsc tse tsl tso tsp tss tst tsu ttb ttc tte ttl tto ttp tts ttt ttu tub tuc tue tul tuo tup tus tut tuu ubb ubc ube ubl ubo ubp ubs ubt ubu ucb ucc uce ucl uco ucp ucs uct ucu ueb uec uee uel uep ues uet ulb ulc ule ull ulo ulp uls ult ulu uob uoc uoe uol uoo uop uos uot up- upb upc upe upo upp ups upt upu usb usc use usl uso usp uss ust usu utb utc ute utl uto utp uts utt utu uuc uue uus uut uuu