-ol b-u bbb bbc bbd bbe bbl bbo bbu bcb bcc bcd bce bcl bco bcu bdb bdc bdd bde bdl bdo bdu be- beb bec bed bee bel beo beu blb blc bld ble bll blo blu bob boc bod boe bol boo bou bub buc bud bue bul buo buu c-- cbb cbc cbd cbe cbl cbo cbu ccb ccc ccd cce ccl cco ccu cdb cdc cdd cde cdl cdo cdu ce- ceb cec ced cee cel ceo ceu cl- clb clc cld cle cll clo clu co- cob coc cod coe col coo cou cub cuc cud cue cul cuo cuu dbb dbc dbd dbe dbl dbo dbu dcb dcc dcd dce dcl dco dcu ddb ddc ddd dde ddl ddo ddu de- deb dec ded dee del deo deu dl- dlb dlc dld dle dll dlo dlu dob doc dod doe dol doo dou dub duc dud due dul duo ebb ebc ebd ebe ebl ebo ebu ec- ecb ecc ecd ece ecl eco ecu ed- edb edc edd ede edl edo edu eeb eec eed eee eel eeo elb elc eld ele ell elo elu eo- eob eoc eod eoe eol eoo eou eu- eub euc eud eue eul lbb lbc lbd lbe lbl lbo lbu lcb lcc lcd lce lcl lco lcu ldb ldc ldd lde ldl ldo ldu leb lec led lee lel leo leu llb llc lld lle lll llo llu lob loc lod loe lol loo lou lub luc lud lue lul luo luu ob- obb obc obd obe obl obo obu oc- ocb occ ocd ocl oco ocu odb odc odd ode odl odo odu oeb oec oed oee oel oeo olb olc old ole oll olo olu oo- oob ooc ood ool ooo ou- ouc oud oue oul ouo ubb ubc ube ubl ubo ubu ucb ucc ucd uce ucl uco ucu udb udc udd ude udl udo udu ueb uec ued uee uel ulb ulc uld ule ull ulo ulu uob uoc uod uoe uol uoo uuc uue uuu