c-- ccc cce ccg cck ccn cco ce- cec cee ceg cek cen ceo cgc cge cgg cgn cgo ckc cko cn- cnc cne cng cnn cno co- coc coe cog cok con coo ec- ecc ece ecg eck ecn eco eec eee eeg eek een eeo egc ege egg egn ego ekc eke ekg eko en- enc ene eng enk enn eno eo- eoc eoe eog eok eon eoo gcc gce gcg gck gcn gco ge- gec gee geg gek gen geo ggc ggg ggn ggo gkn gko gnc gne gnn gno goc goe gog gok gon goo kcc kce kcg kck kcn ke- kec kee keg kek ken keo kgc kgo kkc kke kkk kkn kn- knc kne kng knk knn kno koc koe kog kok kon koo ncc nce ncg nck ncn nco ne- nec nee neg nek nen neo ngc nge ngg ngk ngn ngo nkc nke nkk nkn nko nnc nne nng nnk nnn nno no- noc noe nog nok non noo oc- occ ocg ock ocn oco oec oee oeg oen oeo ogc oge ogg ogn ogo okc oke okg okk oko on- onc one ong onk onn ono oo- ooc oog ook oon ooo