C1111133313331323223313331333133313233232212111133133313111323231   >>    C111113331333132322331333133313331323323221211113313331311132323   <<    C1111133313331323223313331333133313233232212111133133313111323233   >>      C1111133313331323223313331333133313233232212111133133313111323232   >>