-ol bbb bbc bbd bbe bbg bbk bbl bbo bcb bcc bcd bce bcg bck bcl bco bdb bdc bdd bde bdg bdk bdl bdo be- beb bec bed bee beg bek bel beo bgb bgc bgd bge bgg bgk bgl bgo bkb bkc bke bkg bkk bkl bko blb blc bld ble blg blk bll blo bob boc bod boe bog bok bol boo c-- cbb cbc cbd cbe cbg cbk cbl cbo ccb ccc ccd cce ccg cck ccl cco cdb cdc cdd cde cdg cdk cdl cdo ce- ceb cec ced cee ceg cek cel ceo cgb cgc cgd cge cgg cgl cgo ckb ckc ckd cko cl- clb clc cld cle clg clk cll clo co- cob coc cod coe cog cok col coo dbb dbc dbd dbe dbg dbk dbl dbo dcb dcc dcd dce dcg dck dcl dco ddb ddc ddd dde ddg ddk ddl ddo de- deb dec ded dee deg dek del deo dgc dgd dge dgg dgk dgl dkb dkc dke dkg dkk dkl dko dl- dlb dlc dld dle dlg dlk dll dlo dob doc dod doe dog dok dol doo ebb ebc ebd ebe ebg ebk ebl ebo ec- ecb ecc ecd ece ecg eck ecl eco ed- edb edc edd ede edg edk edl edo eeb eec eed eee eeg eek eel eeo egb egc egd ege egg egl ego ekb ekc ekd eke ekg ekl eko elb elc eld ele elg elk ell elo eo- eob eoc eod eoe eog eok eol eoo g-d gbc gbd gbe gbg gbk gbl gbo gcb gcc gcd gce gcg gck gcl gco gdb gdc gdd gde gdk gdl gdo ge- geb gec ged gee geg gek gel geo ggb ggc ggd ggg ggo gkb gkd gko glb glc gld gle glg glk gll glo gob goc god goe gog gok gol goo kbb kbc kbd kbe kbk kbl kbo kcb kcc kcd kce kcg kck kcl kdb kdc kde kdg kdk kdl kdo ke- keb kec ked kee keg kek kel keo kgb kgc kgd kgl kgo kkb kkc kke kkk kkl kl- klb klc kld klg klo kob koc kod koe kog kok kol koo lbb lbc lbd lbe lbg lbk lbl lbo lcb lcc lcd lce lcg lck lcl lco ldb ldc ldd lde ldg ldk ldl ldo leb lec led lee leg lek lel leo lgb lgc lgd lge lgg lgk lgl lgo lkb lkg lkl llb llc lld lle llg llk lll llo lob loc lod loe log lok lol loo ob- obb obc obd obe obg obk obl obo oc- ocb occ ocd ocg ock ocl oco odb odc odd ode odg odl odo oeb oec oed oee oeg oel oeo ogc ogd oge ogg ogl ogo okb okc okd oke okg okk okl oko olb olc old ole olg olk oll olo oo- oob ooc ood oog ook ool ooo