bbb bbe bbg bbn bbo bbt be- beb bee beg ben beo bet bgb bge bgg bgn bgo bgt bnb bne bng bnn bno bnt bob boe bog bon boo bot btb bte btg btn bto btt ebb ebe ebg ebn ebo ebt eeb eee eeg een eeo eet egb ege egg egn ego egt en- enb ene eng enn eno ent eo- eob eoe eog eon eoo eot etb ete etg etn eto ett gbe gbg gbn gbo gbt ge- geb gee geg gen geo get ggb ggg ggn ggo ggt gnb gne gnn gno gnt gob goe gog gon goo got gtb gte gtg gtn gto gtt nbb nbe nbg nbn nbo nbt ne- neb nee neg nen neo net ngb nge ngg ngn ngo ngt nnb nne nng nnn nno nnt no- nob noe nog non noo not ntb nte ntg ntn nto ntt ob- obb obe obg obn obo obt oeb oee oeg oen oeo oet oge ogg ogn ogo ogt on- onb one ong onn ono ont oo- oob oog oon ooo oot ot- otb ote otg otn oto ott tbb tbe tbg tbn tbo tbt te- teb tee teg ten teo tet tgb tge tgg tgn tgo tgt tnb tne tng tnn tno tnt to- tob toe tog ton too tot ttb tte ttg ttn tto ttt