-ic -ol bbb bbc bbi bbl bbn bbo bbx bcb bcc bci bcl bcn bco bcx bi- bib bic bii bil bin bio bix blb blc bli bll bln blo blx bnb bnc bni bnl bnn bno bnx bob boc boi bol bon boo box bxb bxi bxl bxn bxo bxx c-- cbb cbc cbi cbl cbn cbo cbx ccb ccc cci ccl ccn cco ccx ci- cib cic cii cil cin cio cix cl- clb clc cli cll cln clo clx cn- cnb cnc cni cnl cnn cno cnx co- cob coc coi col con coo cox cxc cxi cxl cxo cxx ibb ibc ibi ibl ibn ibo ibx icb icc ici icl icn ico iib iic iii iil iin iio iix il- ilb ilc ili ill iln ilo ilx in- inb inc ini inl inn ino inx io- iob ioc ioi iol ion ioo ixc ixi ixl ixn lbb lbc lbi lbl lbo lbx lcb lcc lci lcl lcn lco lcx lib lic lii lil lin lio lix llb llc lli lll lln llo lnb lnc lni lnl lnn lno lob loc loi lol lon loo lox lxc lxi lxo lxx n-i nbb nbc nbi nbl nbn nbo nbx ncb ncc nci ncl ncn nco ncx nib nic nii nil nin nio nix nlb nlc nli nll nln nlo nlx nnb nnc nni nnl nnn nno no- nob noc noi nol non noo nox nxc nxl o-i ob- obb obc obi obl obn obo obx oc- ocb occ oci ocl ocn oco ocx oib oic oii oil oin oio olb olc oli oll oln olo on- onb onc oni onl onn ono onx oo- oob ooc ooi ool oon ooo oox ox- oxb oxc oxi oxn oxo oxx xbc xbl xbx xcb xci xcl xcx xic xii xin xio xix xlb xli xnc xno xoc xoi xon xoo xox xxi xxl xxo xxx