CREATE ACCOUNT STAFF:BOSS PASSWORD:AAA

CREATE ACCOUNT USER: angela  QUOTA:10

CREATE ACCOUNT USER: alexey  QUOTA:15

CREATE ACCOUNT USER: alice   QUOTA:5

LIST USERS

ADD BOOK: TITLE:Title1 AUTHOR:Author1 SUBJECT:Subject1 ISBN:X1111 COPIES:3

ADD BOOK: TITLE:Title2 AUTHOR:Author2 SUBJECT:Subject2 ISBN:X2222 COPIES:1

ADD BOOK: TITLE:Title3 AUTHOR:Author3 SUBJECT:Subject3 ISBN:X3333 COPIES:2

ADD BOOK: TITLE:Title4 AUTHOR:Author4 SUBJECT:Subject4 ISBN:X4444 COPIES:5

ADD BOOK: TITLE:Title5 AUTHOR:Author2 SUBJECT:Subject5 ISBN:X5555 COPIES:2

ADD BOOK: TITLE:Title6 AUTHOR:Author6 SUBJECT:Subject6 ISBN:X6666 COPIES:2

ADD BOOK: TITLE:Title7 AUTHOR:Author7 SUBJECT:Subject7 ISBN:X7777 COPIES:2

LIST BOOKS

ADD COPY ISBN:X2222

ADD COPY ISBN:X7777

LIST BOOKS

FIND BOOK BY Author2

FIND BOOK ABOUT Subject5

CHECK OUT ISBN:X4444 COPY#3 FOR USER alice

CHECK OUT ISBN:X5555 COPY#1 FOR USER alice

CHECK OUT ISBN:X3333 COPY#1 FOR USER alice

CHECK OUT ISBN:X7777 COPY#1 FOR USER alice

CHECK OUT ISBN:X6666 COPY#1 FOR USER alice

LIST BOOKS

LAST USER BOOK ISBN:X6666 COPY#1

SHOW STATUS OF alice

CHECK OUT ISBN:X1111 COPY#2 FOR USER alice

RETURN ISBN:X3333 COPY#1

SHOW STATUS OF alice

CHECK OUT ISBN:X7777 COPY#2 FOR USER alice