-er -ol -up b-p b-u bbb bbe bbi bbl bbo bbp bbr bbs bbt bbu be- beb bee bei bel beo bep ber bes bet beu bi- bib bie bii bil bio bip bir bis bit biu blb ble bli bll blo blp blr bls blt blu bob boe boi bol boo bop bor bos bot bou bpb bpe bpi bpl bpo bpp bpr bps bpt bpu brb bre bri brl bro brp brr brs brt bru bsb bse bsi bsl bso bsp bsr bss bst bsu btb bte bti btl bto btp btr bts btt btu bub bue bui bul buo bup bur bus but buu ebb ebe ebi ebl ebo ebp ebr ebs ebt ebu eeb eee eel eeo eep eer ees eet eib eie eii eil eio eip eir eis eit eiu elb ele eli ell elo elp elr els elt elu eo- eob eoe eoi eol eoo eop eor eos eot eou ep- epb epe epi epl epo epp epr eps ept epu erb ere eri erl ero erp err ers ert eru es- esb ese esi esl eso esp esr ess est esu etb ete eti etl eto etp etr ets ett etu eu- eub eue eui eul eup eur eus eut ibb ibe ibi ibl ibo ibp ibr ibs ibt ibu ie- iee iei iel iep ier ies iet iib iie iii iil iio iip iir iis iit iiu il- ilb ile ili ill ilo ilp ilr ils ilt ilu io- iob ioe ioi iol ioo iop ior ios iot iou ipb ipe ipi ipl ipo ipp ipr ips ipt ipu ir- irb ire iri irl iro irp irr irs irt iru is- isb ise isi isl iso isp isr iss ist isu itb ite iti itl ito itp its itt itu iu- iub iue iui iup iur ius iut l-p lbb lbe lbi lbl lbo lbp lbr lbs lbt lbu leb lee lei lel leo lep ler les let leu lib lie lii lil lio lip lir lis lit liu llb lle lli lll llo llp llr lls llt llu lob loe loi lol loo lop lor los lot lou lpb lpe lpi lpl lpo lpp lpr lps lpt lpu lrb lri lro lrp lrr lrs lrt lru lsb lse lsi lsl lso lsp lsr lss lst lsu ltb lte lti ltl lto ltp ltr lts ltt ltu lub lue lui lul luo lup lur lus lut luu o-i ob- obb obe obi obl obo obp obr obs obt obu oeb oee oei oel oeo oep oer oes oet oib oie oii oil oio oip oir ois oit oiu olb ole oli oll olo olp ols olt olu oo- oob ooi ool ooo oop oor oos oot op- opb ope opi opl opo opp opr ops opt or- orb ore ori orl oro orp orr ors ort oru os- osb ose osi osl oso osp osr oss ost osu ot- otb ote oti otl oto otp otr ots ott otu ou- oue oui oul ouo oup our ous out p-p pbb pbe pbi pbl pbo pbp pbr pbs pbt pbu peb pee pei pel peo pep per pes pet peu pib pie pii pil pio pip pir pis pit piu plb ple pli pll plo plp plr pls plt plu pob poe poi pol poo pop por pos pot pou ppb ppe ppi ppl ppo ppp ppr pps ppt ppu prb pre pri prl pro prp prr prs prt pru ps- psb pse psi psl pso psp psr pss pst psu pt- ptb pte pti ptl pto ptp ptr pts ptt ptu pub pue pui pul pup pur pus put puu rbb rbe rbi rbl rbo rbp rbr rbs rbt rbu re- reb ree rei rel reo rep rer res ret reu rib rie rii ril rio rip rir ris rit rle rli rll rlo rlp rlr rls rlt rlu rob roe roi rol roo rop ror ros rot rou rpb rpe rpi rpl rpo rpp rpr rps rpt rpu rrb rri rrl rrp rrr rrs rrt rru rsb rse rsi rsl rso rsp rsr rss rst rsu rtb rte rti rtl rto rtp rtr rts rtt rtu rub rue rui ruo rup rur rus rut ruu sbb sbe sbi sbl sbo sbp sbr sbs sbt sbu se- seb see sei sel seo sep ser ses set seu sib sie sii sil sio sip sir sis sit siu slb sle sli sll slo slp slr sls slt slu sob soe soi sol soo sop sor sos sot sou spb spe spi spl spo spp spr sps spt spu sr- srb sre sri srl sro srp srr srs srt ss- ssb sse ssi ssl sso ssp ssr sss sst ssu stb ste sti stl sto stp str sts stt stu sub sue sui sul suo sup sur sus sut suu tbb tbe tbi tbl tbo tbp tbr tbs tbt tbu te- teb tee tei tel teo tep ter tes tet teu tib tie tii til tio tip tir tis tit tiu tle tli tll tlo tlp tlr tls tlt tlu to- tob toe toi tol too top tor tos tot tou tpb tpe tpi tpl tpo tpp tpr tps tpt tpu trb tre tri trl tro trp trr trs trt tru tsb tse tsi tsl tso tsp tsr tss tst tsu ttb tte tti ttl tto ttp ttr tts ttt ttu tub tue tui tul tuo tup tur tus tut tuu ubb ube ubi ubl ubo ubp ubr ubs ubt ubu ueb uee uei uel uep uer ues uet uib uie uii uil uio uip uir uis uit uiu ulb ule uli ull ulo ulp ulr uls ult ulu uob uoe uol uoo uop uor uos uot up- upb upe upi upo upp upr ups upt upu ur- urb ure uri url uro urp urr urs urt uru usb use usi usl uso usp usr uss ust usu utb ute uti utl uto utp utr uts utt utu uue uur uus uut uuu