C312312111111331312111133133313331322331333133313331322331323133313232212321   >>    C31231211111133131211113313331333132233133313331333132233132313331323221232   <<    C312312111111331312111133133313331322331333133313331322331323133313232212323   >>      C312312111111331312111133133313331322331333133313331322331323133313232212322   >>