-ic -ol bbb bbc bbg bbi bbl bbo bbs bbt bcb bcc bcg bci bcl bco bcs bct bgb bgc bgg bgi bgl bgo bgs bgt bi- bib bic big bii bil bio bis bit blb blc blg bli bll blo bls blt bob boc bog boi bol boo bos bot bsb bsc bsg bsi bsl bso bss bst btb btc btg bti btl bto bts btt c-- cbb cbc cbg cbi cbl cbo cbs cbt ccb ccc ccg cci ccl cco ccs cct cgb cgc cgg cgi cgl cgo cgs cgt ci- cib cic cig cii cil cio cis cit cl- clb clc clg cli cll clo cls clt co- cob coc cog coi col coo cos cot csb csc csg csi csl cso css cst ctb ctc ctg cti ctl cto cts ctt gbc gbg gbi gbl gbo gbs gbt gcb gcc gcg gci gcl gco gcs gct ggb ggc ggg ggi ggo ggs ggt gib gic gig gii gil gio gis git glb glc glg gli gll glo gls glt gob goc gog goi gol goo gos got gsb gsc gsg gsi gsl gso gss gst gtb gtc gtg gti gtl gto gts gtt ibb ibc ibg ibi ibl ibo ibs ibt icb icc icg ici icl ico ics ict igb igc igg igi igl igo igs igt iib iic iii iil iio iis iit il- ilb ilc ilg ili ill ilo ils ilt io- iob ioc iog ioi iol ioo ios iot is- isb isc isg isi isl iso iss ist itb itc itg iti itl ito its itt lbb lbc lbg lbi lbl lbo lbs lbt lcb lcc lcg lci lcl lco lcs lct lgb lgc lgg lgi lgl lgo lgs lgt lib lic lig lii lil lio lis lit llb llc llg lli lll llo lls llt lob loc log loi lol loo los lot lsb lsc lsg lsi lsl lso lss lst ltb ltc ltg lti ltl lto lts ltt o-i ob- obb obc obg obi obl obo obs obt oc- ocb occ ocg oci ocl oco ocs oct ogc ogg ogi ogl ogo ogs ogt oib oic oii oil oio ois oit olb olc olg oli oll olo ols olt oo- oob ooc oog ooi ool ooo oos oot os- osb osc osg osi osl oso oss ost ot- otb otc otg oti otl oto ots ott sbb sbc sbg sbi sbl sbo sbs sbt scb scc scg sci scl sco scs sct sgb sgc sgg sgi sgl sgo sgs sgt sib sic sig sii sil sio sis sit slb slc slg sli sll slo sls slt sob soc sog soi sol soo sos sot ss- ssb ssc ssg ssi ssl sso sss sst stb stc stg sti stl sto sts stt tbb tbc tbg tbi tbl tbo tbs tbt tcb tcc tcg tci tcl tco tcs tct tgb tgc tgg tgi tgl tgo tgs tgt tib tic tig tii til tio tis tit tlc tlg tli tll tlo tls tlt to- tob toc tog toi tol too tos tot tsb tsc tsg tsi tsl tso tss tst ttb ttc ttg tti ttl tto tts ttt