C1111233131211111211113313331323133313232212111113331323133313232223231   >>    C111123313121111121111331333132313331323221211111333132313331323222323   <<    C1111233131211111211113313331323133313232212111113331323133313232223233   >>      C1111233131211111211113313331323133313232212111113331323133313232223232   >>