-ic bbb bbc bbd bbe bbi bbk bbl bbm bcb bcc bcd bce bci bck bcl bcm bdb bdc bdd bde bdi bdk bdl bdm be- beb bec bed bee bei bek bel bem bi- bib bic bid bie bii bik bil bim bkb bkc bke bkk bkl bkm blb blc bld ble bli blk bll blm bmb bmc bmd bme bmi bmk bml bmm c-- cbb cbc cbd cbe cbi cbk cbl cbm ccb ccc ccd cce cci cck ccl ccm cdb cdc cdd cde cdi cdk cdl cdm ce- ceb cec ced cee cei cek cel cem ci- cib cic cid cie cii cik cil cim ckb ckc ckd cki ckm cl- clb clc cld cle cli clk cll clm cmb cmc cmd cme cmi cmk cml cmm dbb dbc dbd dbe dbi dbk dbl dbm dcb dcc dcd dce dci dck dcl dcm ddb ddc ddd dde ddi ddk ddl ddm de- deb dec ded dee dei dek del dem di- dib dic did die dii dik dil dim dkb dkc dke dki dkk dkl dkm dl- dlb dlc dld dle dli dlk dll dlm dmb dmc dmd dme dmi dmk dml dmm ebb ebc ebd ebe ebi ebk ebl ebm ec- ecb ecc ecd ece eci eck ecl ecm ed- edb edc edd ede edi edk edl edm eeb eec eed eee eek eel eem eib eic eid eie eii eik eil eim ekb ekc ekd eke eki ekl elb elc eld ele eli elk ell elm em- emb emc emd eme emi emk eml emm i-d ibb ibc ibd ibe ibi ibk ibl ibm icb icc icd ice ici ick icl icm idb idc idd ide idi idk idl idm ie- iec ied iee iei iek iel iem iib iic iid iie iii iil iim ikb ikc ike iki ikk ikl il- ilb ilc ild ile ili ilk ill ilm im- imb imc imd ime imi iml imm kbb kbc kbd kbe kbi kbk kbl kbm kcb kcc kcd kce kci kck kcl kcm kdb kdc kde kdk kdl kdm ke- keb kec ked kee kei kek kel kem kib kic kid kie kii kik kil kim kkb kkc kke kki kkk kkl kkm kl- klb klc kld kli klm kmb kmc kmd kme kmi kmk kml kmm lbb lbc lbd lbe lbi lbk lbl lbm lcb lcc lcd lce lci lck lcl lcm ldb ldc ldd lde ldi ldk ldl ldm leb lec led lee lei lek lel lem lib lic lid lie lii lik lil lim lkb lkl llb llc lld lle lli llk lll llm lmb lmc lmd lme lmi lmk lml lmm mbb mbc mbd mbe mbi mbk mbl mbm mc- mcb mcc mcd mce mci mck mcl mcm mdb mdc mdd mde mdi mdk mdl mdm meb mec med mee mei mek mel mem mi- mib mic mid mie mii mik mil mim mkb mkc mkd mke mkk mkl mkm mlb mlc mld mle mli mlk mll mlm mmb mmc mmd mme mmi mmk mml mmm