C11111211113313112113313331333133313331333131211113313331311233132322132313221   >>    C1111121111331311211331333133313331333133313121111331333131123313232213231322   <<    C11111211113313112113313331333133313331333131211113313331311233132322132313223   >>      C11111211113313112113313331333133313331333131211113313331311233132322132313222   >>