costs K|U|S|T|S K|AA|SH|T|SH K|U|SH|T|SH and AX|N|JH minimize M|I|N|AX|M|A + I|Z M|IH|N|AX|M|IH|Z M|I|N|AX|M|IH|Z M|IH|N|AX|M|A + I|S M|I|N|AX|M|A + I|S M|IH|N|AX|M|IH|S M|I|N|AX|M|IH|S interruptions I|N|T|ER|AH|P|SH|AX|N|Z IH|N|T|I R|AH|P|SH|AX|N|Z I|N|T|I R|AH|P|SH|AX|N|Z IH|N|T|ER|O|P|SH|AX|N|Z I|N|T|ER|O|P|SH|AX|N|Z IH|N|T|I R|O|P|SH|AX|N|Z I|N|T|I R|O|P|SH|AX|N|Z IH|N|T|ER|AH|P|S|AX|N|S I|N|T|ER|AH|P|S|AX|N|S IH|N|T|I R|AH|P|S|AX|N|S I|N|T|I R|AH|P|S|AX|N|S IH|N|T|ER|O|P|S|AX|N|S I|N|T|ER|O|P|S|AX|N|S IH|N|T|I R|O|P|S|AX|N|S I|N|T|I R|O|P|S|AX|N|S in I|N the D|AX daytoday operations U|P|ER|E + I|SH|AX|N|Z AA|P|I R|E + I|SH|AX|N|Z U|P|I R|E + I|SH|AX|N|Z AA|P|ER|A|SH|AX|N|Z U|P|ER|A|SH|AX|N|Z AA|P|I R|A|SH|AX|N|Z U|P|I R|A|SH|AX|N|Z AA|P|ER|E + I|S|AX|N|S U|P|ER|E + I|S|AX|N|S AA|P|I R|E + I|S|AX|N|S U|P|I R|E + I|S|AX|N|S AA|P|ER|A|S|AX|N|S U|P|ER|A|S|AX|N|S AA|P|I R|A|S|AX|N|S U|P|I R|A|S|AX|N|S