C1111233131211111211113313331333133313331312331333131133121111331333221323221   >>    C111123313121111121111331333133313331333131233133313113312111133133322132322   <<    C1111233131211111211113313331333133313331312331333131133121111331333221323223   >>      C1111233131211111211113313331333133313331312331333131133121111331333221323222   >>