-ic -ol bbb bbc bbd bbi bbk bbl bbo bbs bbt bcb bcc bcd bci bck bcl bco bcs bct bdb bdc bdd bdi bdk bdl bdo bds bdt bi- bib bic bid bii bik bil bio bis bit bkb bkc bkk bkl bko bks bkt blb blc bld bli blk bll blo bls blt bob boc bod boi bok bol boo bos bot bsb bsc bsd bsi bsk bsl bso bss bst btb btc btd bti btk btl bto bts btt c-- cbb cbc cbd cbi cbk cbl cbo cbs cbt ccb ccc ccd cci cck ccl cco ccs cct cdb cdc cdd cdi cdk cdl cdo cds cdt ci- cib cic cid cii cik cil cio cis cit ckb ckc ckd cki cko cks ckt cl- clb clc cld cli clk cll clo cls clt co- cob coc cod coi cok col coo cos cot csb csc csd csi csk csl cso css cst ctb ctc ctd cti ctk ctl cto cts ctt dbb dbc dbd dbi dbk dbl dbo dbs dbt dcb dcc dcd dci dck dcl dco dcs dct ddb ddc ddd ddi ddk ddl ddo dds ddt di- dib dic did dii dik dil dio dis dit dkb dkc dki dkk dkl dko dks dkt dl- dlb dlc dld dli dlk dll dlo dls dlt dob doc dod doi dok dol doo dos dot dsb dsc dsd dsi dsk dsl dso dss dst dtb dtc dtd dti dtk dtl dto dts dtt i-d ibb ibc ibd ibi ibk ibl ibo ibs ibt icb icc icd ici ick icl ico ics ict idb idc idd idi idk idl ido ids idt iib iic iid iii iil iio iis iit ikb ikc iki ikk ikl iko iks ikt il- ilb ilc ild ili ilk ill ilo ils ilt io- iob ioc iod ioi iol ioo ios iot is- isb isc isd isi isk isl iso iss ist itb itc itd iti itk itl ito its itt k-t kbb kbc kbd kbi kbk kbl kbo kbs kcb kcc kcd kci kck kcl kcs kct kdb kdc kdk kdl kdo kds kdt kib kic kid kii kik kil kio kis kit kkb kkc kki kkk kkl kks kkt kl- klb klc kld kli klo kls klt kob koc kod koi kok kol koo kos kot ksb ksc ksd ksi ksk ksl kso kss kst ktb ktc ktk ktl kto kts ktt lbb lbc lbd lbi lbk lbl lbo lbs lbt lcb lcc lcd lci lck lcl lco lcs lct ldb ldc ldd ldi ldk ldl ldo lds ldt lib lic lid lii lik lil lio lis lit lkb lkl lks lkt llb llc lld lli llk lll llo lls llt lob loc lod loi lok lol loo los lot lsb lsc lsd lsi lsk lsl lso lss lst ltb ltc ltd lti ltk ltl lto lts ltt o-i ob- obb obc obd obi obk obl obo obs obt oc- ocb occ ocd oci ock ocl oco ocs oct odb odc odd odi odl odo ods odt oib oic oid oii oik oil oio ois oit okb okc okd oki okk okl oko oks olb olc old oli olk oll olo ols olt oo- oob ooc ood ooi ook ool ooo oos oot os- osb osc osd osi osk osl oso oss ost ot- otb otc otd oti otk otl oto ots ott sbb sbc sbd sbi sbk sbl sbo sbs sbt scb scc scd sci sck scl sco scs sct sdb sdc sdd sdi sdk sdl sdo sds sdt sib sic sid sii sik sil sio sis sit sk- skb skc skd ski skk skl sko sks skt slb slc sld sli slk sll slo sls slt sob soc sod soi sok sol soo sos sot ss- ssb ssc ssd ssi ssk ssl sso sss sst stb stc std sti stk stl sto sts stt tbb tbc tbd tbi tbk tbl tbo tbs tbt tcb tcc tcd tci tck tcl tco tcs tct tdb tdc tdd tdi tdk tdl tdo tds tdt tib tic tid tii tik til tio tis tit tkb tkc tkk tkl tko tks tkt tlc tld tli tlk tll tlo tls tlt to- tob toc tod toi tok tol too tos tot tsb tsc tsd tsi tsk tsl tso tss tst ttb ttc ttd tti ttk ttl tto tts ttt