-er -ic -up b-p b-u bbb bbc bbd bbe bbi bbo bbp bbr bbs bbu bcb bcc bcd bce bci bco bcp bcr bcs bcu bdb bdc bdd bde bdi bdo bdp bdr bds bdu be- beb bec bed bee bei beo bep ber bes beu bi- bib bic bid bie bii bio bip bir bis biu bob boc bod boe boi boo bop bor bos bou bpb bpc bpd bpe bpi bpo bpp bpr bps bpu brb brd bre bri bro brp brr brs bru bsb bsc bsd bse bsi bso bsp bsr bss bsu bub buc bud bue bui buo bup bur bus buu c-- cbb cbc cbd cbe cbi cbo cbp cbr cbs cbu ccb ccc ccd cce cci cco ccp ccr ccs ccu cdb cdc cdd cde cdi cdo cdp cdr cds cdu ce- ceb cec ced cee cei ceo cep cer ces ceu ci- cib cic cid cie cii cio cip cir cis ciu co- cob coc cod coe coi coo cop cor cos cou cpb cpc cpd cpe cpi cpo cpp cpr cps cpu crb crc crd cre cri cro crp crr crs cru csb csc csd cse csi cso csp csr css csu cub cuc cud cue cui cuo cup cur cus cuu dbb dbc dbd dbe dbi dbo dbp dbr dbs dbu dcb dcc dcd dce dci dco dcp dcr dcs dcu ddb ddc ddd dde ddi ddo ddp ddr dds ddu de- deb dec ded dee dei deo dep der des deu di- dib dic did die dii dio dip dir dis diu dob doc dod doe doi doo dop dor dos dou dpb dpc dpd dpe dpi dpo dpp dpr dps dpu drb drc drd dre dri dro drp drr drs dru dsb dsc dsd dse dsi dso dsp dsr dss dsu dub duc dud due dui duo dup dur dus ebb ebc ebd ebe ebi ebo ebp ebr ebs ebu ec- ecb ecc ecd ece eci eco ecr ecs ecu ed- edb edc edd ede edi edo edp edr eds edu eeb eec eed eee eeo eep eer ees eib eic eid eie eii eio eip eir eis eiu eo- eob eoc eod eoe eoi eoo eop eor eos eou ep- epb epc epd epe epi epo epp epr eps epu erb erc erd ere eri ero erp err ers eru es- esb esc esd ese esi eso esp esr ess esu eu- eub euc eud eue eui eup eur eus i-d ibb ibc ibd ibe ibi ibo ibp ibr ibs ibu icb icc icd ice ici ico icp icr ics icu idb idc idd ide idi ido idp idr ids idu ie- iec ied iee iei iep ier ies iib iic iid iie iii iio iip iir iis iiu io- iob ioc iod ioe ioi ioo iop ior ios iou ipb ipc ipd ipe ipi ipo ipp ipr ips ipu ir- irb irc ird ire iri iro irp irr irs iru is- isb isc isd ise isi iso isp isr iss isu iu- iub iuc iud iue iui iup iur ius o-i ob- obb obc obd obe obi obo obp obr obs obu oc- ocb occ ocd oci oco ocp ocr ocs ocu odb odc odd ode odi odo odp odr ods odu oeb oec oed oee oei oeo oep oer oes oib oic oid oie oii oio oip oir ois oiu oo- oob ooc ood ooi ooo oop oor oos op- opb opc opd ope opi opo opp opr ops or- orb orc ord ore ori oro orp orr ors oru os- osb osc osd ose osi oso osp osr oss osu ou- ouc oud oue oui ouo oup our ous p-p pbb pbc pbd pbe pbi pbo pbp pbr pbs pbu pcb pcc pcd pce pci pco pcp pcr pcs pcu pdb pdc pdd pde pdi pdo pdp pdr pds pdu peb pec ped pee pei peo pep per pes peu pib pic pid pie pii pio pip pir pis piu pob poc pod poe poi poo pop por pos pou ppb ppc ppd ppe ppi ppo ppp ppr pps ppu prb prc prd pre pri pro prp prr prs pru ps- psb psc psd pse psi pso psp psr pss psu pub puc pud pue pui pup pur pus puu rbb rbc rbd rbe rbi rbo rbp rbr rbs rbu rcb rcc rcd rce rci rco rcp rcr rcs rcu rdb rdc rdd rde rdi rdo rdp rdr rds rdu re- reb rec red ree rei reo rep rer res reu rib ric rid rie rii rio rip rir ris rob roc rod roe roi roo rop ror ros rou rpb rpc rpd rpe rpi rpo rpp rpr rps rpu rrb rrc rrd rri rrp rrr rrs rru rsb rsc rsd rse rsi rso rsp rsr rss rsu rub ruc rud rue rui ruo rup rur rus ruu sbb sbc sbd sbe sbi sbo sbp sbr sbs sbu scb scc scd sce sci sco scp scr scs scu sdb sdc sdd sde sdi sdo sdp sdr sds sdu se- seb sec sed see sei seo sep ser ses seu sib sic sid sie sii sio sip sir sis siu sob soc sod soe soi soo sop sor sos sou spb spc spd spe spi spo spp spr sps spu sr- srb src srd sre sri sro srp srr srs ss- ssb ssc ssd sse ssi sso ssp ssr sss ssu sub suc sud sue sui suo sup sur sus suu ubb ubc ube ubi ubo ubp ubr ubs ubu ucb ucc ucd uce uci uco ucp ucr ucs ucu udb udc udd ude udi udo udp udr uds udu ueb uec ued uee uei uep uer ues uib uic uid uie uii uio uip uir uis uiu uob uoc uod uoe uoo uop uor uos up- upb upc upd upe upi upo upp upr ups upu ur- urb urc urd ure uri uro urp urr urs uru usb usc usd use usi uso usp usr