C21221212121211331313233313131133132333132313223313231133132322112331   >>    C2122121212121133131323331313113313233313231322331323113313232211233   <<    C21221212121211331313233313131133132333132313223313231133132322112333   >>      C21221212121211331313233313131133132333132313223313231133132322112332   >>