-ol bbb bbc bbe bbg bbl bbo bbt bcb bcc bce bcg bcj bcl bco bct be- beb bec bee beg bel beo bet bgb bgc bge bgg bgl bgo bgt bjc bjg bjj bjt blb blc ble blg blj bll blo blt bob boc boe bog boj bol boo bot btb btc bte btg btl bto btt c-- c-j cbb cbc cbe cbg cbj cbl cbo cbt ccb ccc cce ccg ccj ccl cco cct ce- ceb cec cee ceg cej cel ceo cet cgb cgc cge cgg cgl cgo cgt cjb cjc cjg cl- clb clc cle clg clj cll clo clt co- cob coc coe cog coj col coo cot ctb ctc cte ctg ctl cto ctt ebb ebc ebe ebg ebj ebl ebo ebt ec- ecb ecc ece ecg ecj ecl eco ect eeb eec eee eeg eel eeo eet egb egc ege egg egl ego egt ejc ejl ejo ejt elb elc ele elg ell elo elt eo- eob eoc eoe eog eol eoo eot etb etc ete etg etj etl eto ett gbc gbe gbg gbj gbl gbo gbt gcb gcc gce gcg gcl gco gct ge- geb gec gee geg gel geo get ggb ggc ggg ggj ggo ggt gjc gje gjg gjt glb glc gle glg glj gll glo glt gob goc goe gog gol goo got gtb gtc gte gtg gtl gto gtt jbc jbg jbj jbl jbo jbt jcb jcc jce jcl jco jct jeb jec jee jeg jej jel jeo jet jgb jge jgo jgt jjb jjc jjg jjj jjl jlb jlc jle jlg jll jlo jlt job joc joe jog joj jol joo jot jtb jtc jte jtg jtl jtt lbb lbc lbe lbg lbj lbl lbo lbt lcb lcc lce lcg lcj lcl lco lct leb lec lee leg lej lel leo let lgb lgc lge lgg lgj lgl lgo lgt lje ljj llb llc lle llg llj lll llo llt lob loc loe log loj lol loo lot ltb ltc lte ltg ltl lto ltt ob- obb obc obe obg obj obl obo obt oc- ocb occ ocg ocj ocl oco oct oeb oec oee oeg oel oeo oet ogc oge ogg ogl ogo ogt ojb ojc oje ojo olb olc ole olg oll olo olt oo- oob ooc oog ool ooo oot ot- otb otc ote otg otl oto ott tbb tbc tbe tbg tbj tbl tbo tbt tcb tcc tce tcg tcj tcl tco tct te- teb tec tee teg tej tel teo tet tgb tgc tge tgg tgl tgo tgt tjc tje tjo tlc tle tlg tlj tll tlo tlt to- tob toc toe tog toj tol too tot ttb ttc tte ttg ttl tto ttt