-ic b-u bbb bbc bbd bbe bbi bbs bbu bcb bcc bcd bce bci bcs bcu bdb bdc bdd bde bdi bds bdu be- beb bec bed bee bei bes beu bi- bib bic bid bie bii bis biu bsb bsc bsd bse bsi bss bsu bub buc bud bue bui bus buu c-- cbb cbc cbd cbe cbi cbs cbu ccb ccc ccd cce cci ccs ccu cdb cdc cdd cde cdi cds cdu ce- ceb cec ced cee cei ces ceu ci- cib cic cid cie cii cis ciu csb csc csd cse csi css csu cub cuc cud cue cui cus cuu dbb dbc dbd dbe dbi dbs dbu dcb dcc dcd dce dci dcs dcu ddb ddc ddd dde ddi dds ddu de- deb dec ded dee dei des deu di- dib dic did die dii dis diu dsb dsc dsd dse dsi dss dsu dub duc dud due dui dus ebb ebc ebd ebe ebi ebs ebu ec- ecb ecc ecd ece eci ecs ecu ed- edb edc edd ede edi eds edu eeb eec eed eee ees eib eic eid eie eii eis eiu es- esb esc esd ese esi ess esu eu- eub euc eud eue eui eus i-d ibb ibc ibd ibe ibi ibs ibu icb icc icd ice ici ics icu idb idc idd ide idi ids idu ie- iec ied iee iei ies iib iic iid iie iii iis iiu is- isb isc isd ise isi iss isu iu- iub iuc iud iue iui ius sbb sbc sbd sbe sbi sbs sbu scb scc scd sce sci scs scu sdb sdc sdd sde sdi sds sdu se- seb sec sed see sei ses seu sib sic sid sie sii sis siu ss- ssb ssc ssd sse ssi sss ssu sub suc sud sue sui sus suu ubb ubc ube ubi ubs ubu ucb ucc ucd uce uci ucs ucu udb udc udd ude udi uds udu ueb uec ued uee uei ues uib uic uid uie uii uis uiu usb usc usd use usi uss usu uuc uue uus uuu