-ol -up b-p b-u bbb bbe bbi bbl bbo bbp bbs bbu be- beb bee bei bel beo bep bes beu bi- bib bie bii bil bio bip bis biu blb ble bli bll blo blp bls blu bob boe boi bol boo bop bos bou bpb bpe bpi bpl bpo bpp bps bpu bsb bse bsi bsl bso bsp bss bsu bub bue bui bul buo bup bus buu ebb ebe ebi ebl ebo ebp ebs ebu eeb eee eel eeo eep ees eib eie eii eil eio eip eis eiu elb ele eli ell elo elp els elu eo- eob eoe eoi eol eoo eop eos eou ep- epb epe epi epl epo epp eps epu es- esb ese esi esl eso esp ess esu eu- eub eue eui eul eup eus ibb ibe ibi ibl ibo ibp ibs ibu ie- iee iei iel iep ies iib iie iii iil iio iip iis iiu il- ilb ile ili ill ilo ilp ils ilu io- iob ioe ioi iol ioo iop ios iou ipb ipe ipi ipl ipo ipp ips ipu is- isb ise isi isl iso isp iss isu iu- iub iue iui iup ius l-p lbb lbe lbi lbl lbo lbp lbs lbu leb lee lei lel leo lep les leu lib lie lii lil lio lip lis liu llb lle lli lll llo llp lls llu lob loe loi lol loo lop los lou lpb lpe lpi lpl lpo lpp lps lpu lsb lse lsi lsl lso lsp lss lsu lub lue lui lul luo lup lus luu o-i ob- obb obe obi obl obo obp obs obu oeb oee oei oel oeo oep oes oib oie oii oil oio oip ois oiu olb ole oli oll olo olp ols olu oo- oob ooi ool ooo oop oos op- opb ope opi opl opo opp ops os- osb ose osi osl oso osp oss osu ou- oue oui oul ouo oup ous p-p pbb pbe pbi pbl pbo pbp pbs pbu peb pee pei pel peo pep pes peu pib pie pii pil pio pip pis piu plb ple pli pll plo plp pls plu pob poe poi pol poo pop pos pou ppb ppe ppi ppl ppo ppp pps ppu ps- psb pse psi psl pso psp pss psu pub pue pui pul pup pus puu sbb sbe sbi sbl sbo sbp sbs sbu se- seb see sei sel seo sep ses seu sib sie sii sil sio sip sis siu slb sle sli sll slo slp sls slu sob soe soi sol soo sop sos sou spb spe spi spl spo spp sps spu ss- ssb sse ssi ssl sso ssp sss ssu sub sue sui sul suo sup sus suu ubb ube ubi ubl ubo ubp ubs ubu ueb uee uei uel uep ues uib uie uii uil uio uip uis uiu ulb ule uli ull ulo ulp uls ulu uob uoe uol uoo uop uos up- upb upe upi upo upp ups upu usb use usi usl uso usp uss usu uue uus uuu