-ic b-u bbb bbc bbd bbe bbi bbk bbt bbu bcb bcc bcd bce bci bck bct bcu bdb bdc bdd bde bdi bdk bdt bdu be- beb bec bed bee bei bek bet beu bi- bib bic bid bie bii bik bit biu bkb bkc bke bkk bkt btb btc btd bte bti btk btt btu bub buc bud bue bui buk but buu c-- cbb cbc cbd cbe cbi cbk cbt cbu ccb ccc ccd cce cci cck cct ccu cdb cdc cdd cde cdi cdk cdt cdu ce- ceb cec ced cee cei cek cet ceu ci- cib cic cid cie cii cik cit ciu ckb ckc ckd cki ckt ctb ctc ctd cte cti ctk ctt ctu cub cuc cud cue cui cuk cut cuu dbb dbc dbd dbe dbi dbk dbt dbu dcb dcc dcd dce dci dck dct dcu ddb ddc ddd dde ddi ddk ddt ddu de- deb dec ded dee dei dek det deu di- dib dic did die dii dik dit diu dkb dkc dke dki dkk dkt dku dtb dtc dtd dte dti dtk dtt dtu dub duc dud due dui duk dut ebb ebc ebd ebe ebi ebk ebt ebu ec- ecb ecc ecd ece eci eck ect ecu ed- edb edc edd ede edi edk edt edu eeb eec eed eee eek eet eib eic eid eie eii eik eit eiu ekb ekc ekd eke eki ekt eku etb etc etd ete eti etk ett etu eu- eub euc eud eue eui eut i-d ibb ibc ibd ibe ibi ibk ibt ibu icb icc icd ice ici ick ict icu idb idc idd ide idi idk idt idu ie- iec ied iee iei iek iet iib iic iid iie iii iit iiu ikb ikc ike iki ikk ikt iku itb itc itd ite iti itk itt itu iu- iub iuc iud iue iui iut k-t kbb kbc kbd kbe kbi kbk kbu kcb kcc kcd kce kci kck kct kcu kdb kdc kde kdk kdt kdu ke- keb kec ked kee kei kek ket kib kic kid kie kii kik kit kiu kkb kkc kke kki kkk kkt kku ktb ktc kte ktk ktt ktu kub kuc kud kue kui kuk kut kuu tbb tbc tbd tbe tbi tbk tbt tbu tcb tcc tcd tce tci tck tct tcu tdb tdc tdd tde tdi tdk tdt tdu te- teb tec ted tee tei tek tet teu tib tic tid tie tii tik tit tiu tkb tkc tke tkk tkt ttb ttc ttd tte tti ttk ttt ttu tub tuc tud tue tui tuk tut tuu ubb ubc ube ubi ubk ubt ubu ucb ucc ucd uce uci uck uct ucu udb udc udd ude udi udk udt udu ueb uec ued uee uei uet uib uic uid uie uii uit uiu ukb ukc uke uki ukk uku utb utc utd ute uti utk utt utu uuc uue uut uuu