-ic b-u bbb bbc bbd bbf bbg bbi bbo bbr bbs bbt bbu bcb bcc bcd bcf bcg bci bco bcr bcs bct bcu bdb bdc bdd bdf bdg bdi bdo bdr bds bdt bdu bfb bfc bfd bff bfg bfi bfo bfr bfs bft bfu bgb bgc bgd bgf bgg bgi bgo bgr bgs bgt bgu bi- bib bic bid bif big bii bio bir bis bit biu bob boc bod bof bog boi boo bor bos bot bou brb brd brf brg bri bro brr brs brt bru bsb bsc bsd bsf bsg bsi bso bsr bss bst bsu btb btc btd btf btg bti bto btr bts btt btu bub buc bud buf bug bui buo bur bus but buu c-- cbb cbc cbd cbf cbg cbi cbo cbr cbs cbt cbu ccb ccc ccd ccf ccg cci cco ccr ccs cct ccu cdb cdc cdd cdf cdg cdi cdo cdr cds cdt cdu cfb cfc cfd cff cfg cfi cfo cfr cfs cft cfu cgb cgc cgd cgg cgi cgo cgr cgs cgt cgu ci- cib cic cid cif cig cii cio cir cis cit ciu co- cob coc cod cof cog coi coo cor cos cot cou crb crc crd crf crg cri cro crr crs crt cru csb csc csd csf csg csi cso csr css cst csu ctb ctc ctd ctf ctg cti cto ctr cts ctt ctu cub cuc cud cuf cug cui cuo cur cus cut cuu dbb dbc dbd dbf dbg dbi dbo dbr dbs dbt dbu dcb dcc dcd dcf dcg dci dco dcr dcs dct dcu ddb ddc ddd ddf ddg ddi ddo ddr dds ddt ddu dfb dfc dfd dff dfg dfi dfo dfr dfs dft dfu dgc dgd dgf dgg dgi dgr dgs dgt dgu di- dib dic did dif dig dii dio dir dis dit diu dob doc dod dof dog doi doo dor dos dot dou drb drc drd drg dri dro drr drs drt dru dsb dsc dsd dsf dsg dsi dso dsr dss dst dsu dtb dtc dtd dtf dtg dti dto dtr dts dtt dtu dub duc dud duf dug dui duo dur dus dut fbb fbc fbd fbf fbg fbi fbo fbr fbs fbt fbu fcb fcc fcd fcf fcg fci fco fcr fcs fct fcu fdb fdc fdd fdf fdg fdi fdo fdr fds fdt fdu ffc ffd fff ffg ffi ffo ffr ffs fft ffu fgb fgc fgd fgf fgg fgi fgr fgs fgt fib fic fid fif fig fii fir fis fit fiu fob foc fof fog foi foo for fos fot fou frb frc frd frf frg fri fro frr frs frt fru fsb fsc fsd fsf fsg fsi fso fsr fss fst fsu ftb ftc ftd ftf ftg fti fto ftr fts ftt ftu fub fud fuf fug fui fuo fur fus fut fuu g-d gbc gbd gbf gbg gbi gbo gbr gbs gbt gbu gcb gcc gcd gcf gcg gci gco gcr gcs gct gcu gdb gdc gdd gdf gdi gdo gdr gds gdt gdu gfb gfc gfd gff gfi gfo gfr gfs gft ggb ggc ggd ggg ggi ggo ggr ggs ggt ggu gib gic gid gif gig gii gio gir gis git giu gob goc god gof gog goi goo gor gos got gou grb grc grd grf grg gri gro grr grs grt gru gsb gsc gsd gsf gsg gsi gso gsr gss gst gsu gtb gtc gtd gtf gtg gti gto gtr gts gtt gtu gu- gub guc gud guf gug gui guo gur gus gut guu i-d i-f ibb ibc ibd ibf ibg ibi ibo ibr ibs ibt ibu icb icc icd icf icg ici ico icr ics ict icu idb idc idd idf idg idi ido idr ids idt idu ifb ifc ifd iff ifg ifi ifo ifr ifs ift ifu igb igc igd igf igg igi igo igr igs igt igu iib iic iid iif iii iio iir iis iit iiu io- iob ioc iod iof iog ioi ioo ior ios iot iou ir- irb irc ird irf irg iri iro irr irs irt iru is- isb isc isd isf isg isi iso isr iss ist isu itb itc itd itf itg iti ito its itt itu iu- iub iuc iud iug iui iur ius iut o-i ob- obb obc obd obf obg obi obo obr obs obt obu oc- ocb occ ocd ocf ocg oci oco ocr ocs oct ocu odb odc odd odf odg odi odo odr ods odt odu of- ofb ofc ofd off ofg ofi ofo ofr ofs oft ofu ogc ogd ogf ogg ogi ogo ogs ogt oib oic oid oif oii oio oir ois oit oiu oo- oob ooc ood oof oog ooi ooo oor oos oot or- orb orc ord orf org ori oro orr ors ort oru os- osb osc osd osf osg osi oso osr oss ost osu ot- otb otc otd otf otg oti oto otr ots ott otu ou- ouc oud ouf oui ouo our ous out rbb rbc rbd rbf rbg rbi rbo rbr rbs rbt rbu rcb rcc rcd rcf rcg rci rco rcr rcs rct rcu rdb rdc rdd rdf rdg rdi rdo rdr rds rdt rdu rfb rfc rfd rff rfg rfi rfo rfr rfs rft rfu rgb rgc rgd rgf rgg rgi rgo rgr rgs rgt rib ric rid rif rig rii rio rir ris rit rob roc rod rof rog roi roo ror ros rot rou rrb rrc rrd rrf rrg rri rrr rrs rrt rru rsb rsc rsd rsf rsg rsi rso rsr rss rst rsu rtb rtc rtd rtf rtg rti rto rtr rts rtt rtu rub ruc rud ruf rug rui ruo rur rus rut ruu sbb sbc sbd sbf sbg sbi sbo sbr sbs sbt sbu scb scc scd scf scg sci sco scr scs sct scu sdb sdc sdd sdf sdg sdi sdo sdr sds sdt sdu sfb sfc sfd sff sfg sfi sfo sfr