-ic -ol bbb bbc bbi bbl bbn bbo bbt bcb bcc bci bcl bcn bco bct bi- bib bic bii bil bin bio bit blb blc bli bll bln blo blt bnb bnc bni bnl bnn bno bnt bob boc boi bol bon boo bot btb btc bti btl btn bto btt c-- cbb cbc cbi cbl cbn cbo cbt ccb ccc cci ccl ccn cco cct ci- cib cic cii cil cin cio cit cl- clb clc cli cll cln clo clt cn- cnb cnc cni cnl cnn cno cnt co- cob coc coi col con coo cot ctb ctc cti ctl ctn cto ctt ibb ibc ibi ibl ibn ibo ibt icb icc ici icl icn ico ict iib iic iii iil iin iio iit il- ilb ilc ili ill iln ilo ilt in- inb inc ini inl inn ino int io- iob ioc ioi iol ion ioo iot itb itc iti itl itn ito itt lbb lbc lbi lbl lbo lbt lcb lcc lci lcl lcn lco lct lib lic lii lil lin lio lit llb llc lli lll lln llo llt lnb lnc lni lnl lnn lno lnt lob loc loi lol lon loo lot ltb ltc lti ltl lto ltt n-i nbb nbc nbi nbl nbn nbo nbt ncb ncc nci ncl ncn nco nct nib nic nii nil nin nio nit nlb nlc nli nll nln nlo nlt nnb nnc nni nnl nnn nno nnt no- nob noc noi nol non noo not ntb ntc nti ntn nto ntt o-i ob- obb obc obi obl obn obo obt oc- ocb occ oci ocl ocn oco oct oib oic oii oil oin oio oit olb olc oli oll oln olo olt on- onb onc oni onl onn ono ont oo- oob ooc ooi ool oon ooo oot ot- otb otc oti otl otn oto ott tbb tbc tbi tbl tbn tbo tbt tcb tcc tci tcl tcn tco tct tib tic tii til tin tio tit tlc tli tll tln tlo tlt tnb tnc tni tnl tnn tno tnt to- tob toc toi tol ton too tot ttb ttc tti ttl ttn tto ttt