C1 rhymes with:
m1, one, puget-1, won, begun, bruhn, brun, brunn, bun, bunn, byun, chun, chunn, done, donne, dun, dunn, dunne, fun, gruhn, grun, gun, gunn, homerun, huhn, hun, hunn, jun, kuhne, kun, lajeune, luhn, lun, lunn, m1, mcfun, mcmunn, mun, munn, none, nuhn, nun, nunn, one, outdone, outrun, overdone, puget-1, pun, redone, rerun, run, shun, simeone, son, spun, stun, sun, thrun, thun, ton, tonne, un, undone, won, youn, yun
C1 sounds like:
c, c's, c2, c3, c4, c5, ca, cac, cac's, cacace, cacaci, cacao, caccia, cache, caches, cacho, cacique, cage, cage's, cages, cagey, caguas, cahasa, cai, caiazzo, caisse, caissie, cake, cake's, cakes, cao, caq, caq's, cas, casa, casas, casassa, casaus, casazza, cascio, casco, case, case's, cases, casesa, casey, casey's, caseze, caseze's, cash, cashes, cashew, cashews, cashway, cashways, casias, casio, cask, caskey, casks, caso, cass, cassese, cassia, cassie, cassis, casso, cassock, cau, caucasus, caucus, caucus's, caucuses, caughey, cause, causes, causeway, causeways, causey, caw, cay, caya, cayce, cayes, cayuses, cc, ccs, cea, cease, ceases, ceaucescu, ceausescu, ceausescu's, cecchi, cece, cech, ceci, ceco, cecos, cees, ceja, cejka, cha, cha-chas, chace, chachi, chacko, chae, chai, chaise, chao, chaos, chas, chase, chase's, chases, chaska, chasse, chassis, chau, chaus, chausse, chaussee, chaw, chaz, chazz, che, che's, chea, checchi, check, checks, chee, cheech, cheek, cheeks, cheeky, cheese, cheesecake, cheeses, cheesy, chek, ches, chess, cheuse, chew, chews, chewy, chez, chi, chi's, chia, chiasso, chic, chicago, chicago's, chichauha, chichauha's, chichi, chick, chickasaw, chickasaws, chicks, chico, chico's, chiesa, chihuahua, chikos, chiswick, chiu, chizek, cho, chock, choe, choi, choice, choices, chok, choke, chokes, choo, chook, choose, chooses, choosy, chose, chou, chow, chows, choy, choyce, chu, chua, chuah, chuck, chuck's, chuckie, chug, chugai, chugoku, chui, chukchi, chuse, cia, ciaccia, ciaccio, ciao, cicco, cichocki, cichowski, cichy, cicio, cie, ciga, cihak, ciocca, cisco, cisco's, cisek, cisewski, ciskei, cissie, ciszek, ciszewski, ciucci, cizek, cizik, co, coach, coach's, coaches, coax, coaxes, coca, cocca, cocchi, coccia, cocco, coccus, cock, cocke, cockey, cocks, cocky, coco, cocoa, cocos, cocozza, cocuzza, coe, coey, cog, cogeco, cohea, cohee, cohick, coho, coia, coke, coke's, cokes, cokie, cokie's, coo, coochie, cook, cook's, cooke, cookie, cookies, cooks, cooksey, coos, coosa, cos, cosa, coscia, cose, cosey, cosi, cosic, cosio, coss, cossa, cossack, cossacks, cossey, cossiga, cosy, cou, couch, couches, couey, cough, coughs, couse, cousy, cow, cow's, cowie, cows, cox, cox's, coxe, coy, coye, coz, cozy, cozza, cozzi, cucchi, cucci, cuccia, cuccio, cuckoo, cuckoo's, cuckoos, cuco, cue, cues, cuoco, cuozzo, cus, cusack, cush, cushey, cushy, cusic, cusick, cusk, cuso, cuso's, cuss, cuyahoga, cwik, cxc, cy, cyacq, czaja, czajka, czajkowski, czech, czechowski, czechs, czekajewski, czyz, czyzewski