-ic bbb bbc bbe bbg bbi bbk bbt bcb bcc bce bcg bci bck bct be- beb bec bee beg bei bek bet bgb bgc bge bgg bgi bgk bgt bi- bib bic bie big bii bik bit bkb bkc bke bkg bkk bkt btb btc bte btg bti btk btt c-- cbb cbc cbe cbg cbi cbk cbt ccb ccc cce ccg cci cck cct ce- ceb cec cee ceg cei cek cet cgb cgc cge cgg cgi cgt ci- cib cic cie cig cii cik cit ckb ckc cki ckt ctb ctc cte ctg cti ctk ctt ebb ebc ebe ebg ebi ebk ebt ec- ecb ecc ece ecg eci eck ect eeb eec eee eeg eek eet egb egc ege egg egi egt eib eic eie eig eii eik eit ekb ekc eke ekg eki ekt etb etc ete etg eti etk ett gbc gbe gbg gbi gbk gbt gcb gcc gce gcg gci gck gct ge- geb gec gee geg gei gek get ggb ggc ggg ggi ggt gib gic gie gig gii gik git gkb gkt gtb gtc gte gtg gti gtk gtt ibb ibc ibe ibg ibi ibk ibt icb icc ice icg ici ick ict ie- iec iee ieg iei iek iet igb igc ige igg igi igk igt iib iic iie iii iit ikb ikc ike iki ikk ikt itb itc ite itg iti itk itt k-t kbb kbc kbe kbi kbk kcb kcc kce kcg kci kck kct ke- keb kec kee keg kei kek ket kgb kgc kgi kib kic kie kig kii kik kit kkb kkc kke kki kkk kkt ktb ktc kte ktg ktk ktt tbb tbc tbe tbg tbi tbk tbt tcb tcc tce tcg tci tck tct te- teb tec tee teg tei tek tet tgb tgc tge tgg tgi tgk tgt tib tic tie tig tii tik tit tkb tkc tke tkg tkk tkt ttb ttc tte ttg tti ttk ttt