N ports representing the mission to be completed (closed cycle)
Based on selected sequence CHARME Sequencer evaluates the total cost of the mission
CHARME evaluates the new sequences obtained as shift of two ports from previous sequence
Changes involving cost reduction are maintained as new reference sequence by CHARME
When n shifts have been tested without any improvement CHARME moved up to shift three ports (i.e. ABCDE, ADBCE)
The process is replicated for a predefined shift no.