-ic bbb bbc bbd bbe bbi bbk bbt bcb bcc bcd bce bci bck bct bdb bdc bdd bde bdi bdk bdt be- beb bec bed bee bei bek bet bi- bib bic bid bie bii bik bit bkb bkc bke bkk bkt btb btc btd bte bti btk btt c-- cbb cbc cbd cbe cbi cbk cbt ccb ccc ccd cce cci cck cct cdb cdc cdd cde cdi cdk cdt ce- ceb cec ced cee cei cek cet ci- cib cic cid cie cii cik cit ckb ckc ckd cki ckt ctb ctc ctd cte cti ctk ctt dbb dbc dbd dbe dbi dbk dbt dcb dcc dcd dce dci dck dct ddb ddc ddd dde ddi ddk ddt de- deb dec ded dee dei dek det di- dib dic did die dii dik dit dkb dkc dke dki dkk dkt dtb dtc dtd dte dti dtk dtt ebb ebc ebd ebe ebi ebk ebt ec- ecb ecc ecd ece eci eck ect ed- edb edc edd ede edi edk edt eeb eec eed eee eek eet eib eic eid eie eii eik eit ekb ekc ekd eke eki ekt etb etc etd ete eti etk ett i-d ibb ibc ibd ibe ibi ibk ibt icb icc icd ice ici ick ict idb idc idd ide idi idk idt ie- iec ied iee iei iek iet iib iic iid iie iii iit ikb ikc ike iki ikk ikt itb itc itd ite iti itk itt k-t kbb kbc kbd kbe kbi kbk kcb kcc kcd kce kci kck kct kdb kdc kde kdk kdt ke- keb kec ked kee kei kek ket kib kic kid kie kii kik kit kkb kkc kke kki kkk kkt ktb ktc kte ktk ktt tbb tbc tbd tbe tbi tbk tbt tcb tcc tcd tce tci tck tct tdb tdc tdd tde tdi tdk tdt te- teb tec ted tee tei tek tet tib tic tid tie tii tik tit tkb tkc tke tkk tkt ttb ttc ttd tte tti ttk ttt