C1111233133313231133133313331333131211113313222111211111333132322333321   >>    C111123313331323113313331333133313121111331322211121111133313232233332   <<    C1111233133313231133133313331333131211113313222111211111333132322333323   >>      C1111233133313231133133313331333131211113313222111211111333132322333322   >>