C1111233131211111211113313331323133313232212111113331322121133133311233131   >>    C111123313121111121111331333132313331323221211111333132212113313331123313   <<    C1111233131211111211113313331323133313232212111113331322121133133311233133   >>      C1111233131211111211113313331323133313232212111113331322121133133311233132   >>