C11111211113313112113313331333133313331333132313331333133313331311233131213221   >>    C1111121111331311211331333133313331333133313231333133313331333131123313121322   <<    C11111211113313112113313331333133313331333132313331333133313331311233131213223   >>      C11111211113313112113313331333133313331333132313331333133313331311233131213222   >>