-ic -ol bbb bbc bbi bbl bbn bbo bbs bcb bcc bci bcl bcn bco bcs bi- bib bic bii bil bin bio bis blb blc bli bll bln blo bls bnb bnc bni bnl bnn bno bns bob boc boi bol bon boo bos bsb bsc bsi bsl bsn bso bss c-- cbb cbc cbi cbl cbn cbo cbs ccb ccc cci ccl ccn cco ccs ci- cib cic cii cil cin cio cis cl- clb clc cli cll cln clo cls cn- cnb cnc cni cnl cnn cno cns co- cob coc coi col con coo cos csb csc csi csl csn cso css ibb ibc ibi ibl ibn ibo ibs icb icc ici icl icn ico ics iib iic iii iil iin iio iis il- ilb ilc ili ill iln ilo ils in- inb inc ini inl inn ino ins io- iob ioc ioi iol ion ioo ios is- isb isc isi isl isn iso iss lbb lbc lbi lbl lbo lbs lcb lcc lci lcl lcn lco lcs lib lic lii lil lin lio lis llb llc lli lll lln llo lls lnb lnc lni lnl lnn lno lns lob loc loi lol lon loo los lsb lsc lsi lsl lsn lso lss n-i nbb nbc nbi nbl nbn nbo nbs ncb ncc nci ncl ncn nco ncs nib nic nii nil nin nio nis nlb nlc nli nll nln nlo nls nnb nnc nni nnl nnn nno nns no- nob noc noi nol non noo nos nsb nsc nsi nsl nsn nso nss o-i ob- obb obc obi obl obn obo obs oc- ocb occ oci ocl ocn oco ocs oib oic oii oil oin oio ois olb olc oli oll oln olo ols on- onb onc oni onl onn ono ons oo- oob ooc ooi ool oon ooo oos os- osb osc osi osl osn oso oss sbb sbc sbi sbl sbn sbo sbs scb scc sci scl scn sco scs sib sic sii sil sin sio sis slb slc sli sll sln slo sls snb snc sni snl snn sno sns sob soc soi sol son soo sos ss- ssb ssc ssi ssl ssn sso sss