C-span's rhymes with:
greenspan's, lifespans, bedpans, greenspan's, lifespans, afghanistan's, afghanistans, afghans, alcan's, bedpans, businessman's, caftans, callahan's, caltrans, caravans, goodman's, greenspan's, intertrans, lifespans, lumberman's, meehans, pakistan's, rosecrans, rosenkrans, stockman's, tajikistan's, taliban's, talibans, tarzan's
C-span's sounds like:
cabanas, cabaniss, cabiness, cabins, capobianco, capping, cavanagh, cavanaugh, cavaness, cavenaugh, caviness, caving, cavins, cavness, chaffins, chafing, chapman's, chapnick, cheapening, cheapens, cheapness, cheekbones, chipping, chopping, chovanec, cobain's, cobbins, coffing, coffins, cohesiveness, coping, coppens, copping, coppins, copying, couponing, coupons, cowabunga, cubans