C312322331333132212111133133313331333131323223313231333131121231   >>    C31232233133313221211113313331333133313132322331323133313112123   <<    C312322331333132212111133133313331333131323223313231333131121233   >>      C312322331333132212111133133313331333131323223313231333131121232   >>