C132233133112121111331333133313331333132322331333133313233212212321   >>    C13223313311212111133133313331333133313232233133313331323321221232   <<    C132233133112121111331333133313331333132322331333133313233212212323   >>      C132233133112121111331333133313331333132322331333133313233212212322   >>