bbb bbc bbe bbo bbt bcb bcc bce bcj bco bct be- beb bec bee beo bet bjc bjj bjt bob boc boe boj boo bot btb btc bte bto btt c-- c-j cbb cbc cbe cbj cbo cbt ccb ccc cce ccj cco cct ce- ceb cec cee cej ceo cet cjb cjc co- cob coc coe coj coo cot ctb ctc cte cto ctt ebb ebc ebe ebj ebo ebt ec- ecb ecc ece ecj eco ect eeb eec eee eeo eet ejc ejo ejt eo- eob eoc eoe eoo eot etb etc ete etj eto ett jbc jbj jbo jbt jcb jcc jce jco jct jeb jec jee jej jeo jet jjb jjc jjj job joc joe joj joo jot jtb jtc jte jtt ob- obb obc obe obj obo obt oc- ocb occ ocj oco oct oeb oec oee oeo oet ojb ojc oje ojo oo- oob ooc ooo oot ot- otb otc ote oto ott tbb tbc tbe tbj tbo tbt tcb tcc tce tcj tco tct te- teb tec tee tej teo tet tjc tje tjo to- tob toc toe toj too tot ttb ttc tte tto ttt