C11111333133313232233133313331333131133132313331313233313231133121   >>    C1111133313331323223313331333133313113313231333131323331323113312   <<    C11111333133313232233133313331333131133132313331313233313231133123   >>      C11111333133313232233133313331333131133132313331313233313231133122   >>