C3123223313331322121111331333133313231333132333131333132313221211   >>    C312322331333132212111133133313331323133313233313133313231322121   <<    C3123223313331322121111331333133313231333132333131333132313221213   >>      C3123223313331322121111331333133313231333132333131333132313221212   >>