-ic b-u bbb bbc bbd bbi bbo bbr bbs bbu bby bcb bcc bcd bci bco bcr bcs bcu bcy bdb bdc bdd bdi bdo bdr bds bdu bdy bi- bib bic bid bii bio bir bis biu biy bob boc bod boi boo bor bos bou boy brb brd bri bro brr brs bru bry bsb bsc bsd bsi bso bsr bss bsu bsy bub buc bud bui buo bur bus buu buy by- byc byd byi byo byr bys byu c-- cbb cbc cbd cbi cbo cbr cbs cbu cby ccb ccc ccd cci cco ccr ccs ccu cdb cdc cdd cdi cdo cdr cds cdu cdy ci- cib cic cid cii cio cir cis ciu co- cob coc cod coi coo cor cos cou coy crb crc crd cri cro crr crs cru cry csb csc csd csi cso csr css csu csy cub cuc cud cui cuo cur cus cuu cuy cyb cyc cyd cyo cyr cys dbb dbc dbd dbi dbo dbr dbs dbu dby dcb dcc dcd dci dco dcr dcs dcu ddb ddc ddd ddi ddo ddr dds ddu ddy di- dib dic did dii dio dir dis diu diy dob doc dod doi doo dor dos dou doy drb drc drd dri dro drr drs dru dry dsb dsc dsd dsi dso dsr dss dsu dsy dub duc dud dui duo dur dus duy dy- dyb dyc dyd dyo dyr dys dyu dyy i-d ibb ibc ibd ibi ibo ibr ibs ibu iby icb icc icd ici ico icr ics icu icy idb idc idd idi ido idr ids idu idy iib iic iid iii iio iir iis iiu io- iob ioc iod ioi ioo ior ios iou ir- irb irc ird iri iro irr irs iru iry is- isb isc isd isi iso isr iss isu isy iu- iub iuc iud iui iur ius iyc iyo iyr iys iyy o-i ob- obb obc obd obi obo obr obs obu oby oc- ocb occ ocd oci oco ocr ocs ocu odb odc odd odi odo odr ods odu oib oic oid oii oio oir ois oiu oo- oob ooc ood ooi ooo oor oos or- orb orc ord ori oro orr ors oru ory os- osb osc osd osi oso osr oss osu ou- ouc oud oui ouo our ous oyd oyi oyo oys rbb rbc rbd rbi rbo rbr rbs rbu rcb rcc rcd rci rco rcr rcs rcu rdb rdc rdd rdi rdo rdr rds rdu rdy rib ric rid rii rio rir ris riy rob roc rod roi roo ror ros rou roy rrb rrc rrd rri rrr rrs rru rsb rsc rsd rsi rso rsr rss rsu rub ruc rud rui ruo rur rus ruu ruy ry- ryc ryd ryo ryr rys ryu ryy sbb sbc sbd sbi sbo sbr sbs sbu sby scb scc scd sci sco scr scs scu sdb sdc sdd sdi sdo sdr sds sdu sdy sib sic sid sii sio sir sis siu sob soc sod soi soo sor sos sou soy sr- srb src srd sri sro srr srs sry ss- ssb ssc ssd ssi sso ssr sss ssu sub suc sud sui suo sur sus suu suy sy- syb syc syd syi syr sys syu ubb ubc ubi ubo ubr ubs ubu uby ucb ucc ucd uci uco ucr ucs ucu udb udc udd udi udo udr uds udu uib uic uid uii uio uir uis uiu uob uoc uod uoo uor uos ur- urb urc urd uri uro urr urs uru ury usb usc usd usi uso usr uss usu uuc uur uus uuu uyc uyi uyo uys uyu ybc ybi ybr ybs yby ycc ycd yci yco ycs ycu ycy ydo yds ydy yid yii yio yir yis yob yoc yod yoi yoo yor yos you yoy yrc yro yrs yru ysb ysc ysi yso ysr yss ysu ysy yud yui yuo yur yus yuu yuy yyb yyc yys yyu yyy