-ic c-- ccc ccd cce cci cck cco cct cdc cdd cde cdi cdk cdo cdt ce- cec ced cee cei cek ceo cet ci- cic cid cie cii cik cio cit ckc ckd cki cko ckt co- coc cod coe coi cok coo cot ctc ctd cte cti ctk cto ctt dcc dcd dce dci dck dco dct ddc ddd dde ddi ddk ddo ddt de- dec ded dee dei dek deo det di- dic did die dii dik dio dit dkc dke dki dkk dko dkt doc dod doe doi dok doo dot dtc dtd dte dti dtk dto dtt ec- ecc ecd ece eci eck eco ect ed- edc edd ede edi edk edo edt eec eed eee eek eeo eet eic eid eie eii eik eio eit ekc ekd eke eki eko ekt eo- eoc eod eoe eoi eok eoo eot etc etd ete eti etk eto ett i-d icc icd ice ici ick ico ict idc idd ide idi idk ido idt ie- iec ied iee iei iek iet iic iid iie iii iio iit ikc ike iki ikk iko ikt io- ioc iod ioe ioi ioo iot itc itd ite iti itk ito itt k-t kcc kcd kce kci kck kct kdc kde kdk kdo kdt ke- kec ked kee kei kek keo ket kic kid kie kii kik kio kit kkc kke kki kkk kkt koc kod koe koi kok koo kot ktc kte ktk kto ktt o-i oc- occ ocd oci ock oco oct odc odd ode odi odo odt oec oed oee oei oeo oet oic oid oie oii oik oio oit okc okd oke oki okk oko oo- ooc ood ooi ook ooo oot ot- otc otd ote oti otk oto ott tcc tcd tce tci tck tco tct tdc tdd tde tdi tdk tdo tdt te- tec ted tee tei tek teo tet tic tid tie tii tik tio tit tkc tke tkk tko tkt to- toc tod toe toi tok too tot ttc ttd tte tti ttk tto ttt