-ic -ol bbb bbc bbe bbi bbl bbo bbt bcb bcc bce bci bcl bco bct be- beb bec bee bei bel beo bet bi- bib bic bie bii bil bio bit blb blc ble bli bll blo blt bob boc boe boi bol boo bot btb btc bte bti btl bto btt c-- cbb cbc cbe cbi cbl cbo cbt ccb ccc cce cci ccl cco cct ce- ceb cec cee cei cel ceo cet ci- cib cic cie cii cil cio cit cl- clb clc cle cli cll clo clt co- cob coc coe coi col coo cot ctb ctc cte cti ctl cto ctt ebb ebc ebe ebi ebl ebo ebt ec- ecb ecc ece eci ecl eco ect eeb eec eee eel eeo eet eib eic eie eii eil eio eit elb elc ele eli ell elo elt eo- eob eoc eoe eoi eol eoo eot etb etc ete eti etl eto ett ibb ibc ibe ibi ibl ibo ibt icb icc ice ici icl ico ict ie- iec iee iei iel iet iib iic iie iii iil iio iit il- ilb ilc ile ili ill ilo ilt io- iob ioc ioe ioi iol ioo iot itb itc ite iti itl ito itt lbb lbc lbe lbi lbl lbo lbt lcb lcc lce lci lcl lco lct leb lec lee lei lel leo let lib lic lie lii lil lio lit llb llc lle lli lll llo llt lob loc loe loi lol loo lot ltb ltc lte lti ltl lto ltt o-i ob- obb obc obe obi obl obo obt oc- ocb occ oci ocl oco oct oeb oec oee oei oel oeo oet oib oic oie oii oil oio oit olb olc ole oli oll olo olt oo- oob ooc ooi ool ooo oot ot- otb otc ote oti otl oto ott tbb tbc tbe tbi tbl tbo tbt tcb tcc tce tci tcl tco tct te- teb tec tee tei tel teo tet tib tic tie tii til tio tit tlc tle tli tll tlo tlt to- tob toc toe toi tol too tot ttb ttc tte tti ttl tto ttt