new
empty 1
size 0
front!
back!
height -1
member  5 0
member 10 0
member 15 0
insert 10 1
empty 0
size 1
front 10
back 10
height 0
member  5 0
member 10 1
member 15 0
insert 10 0
insert  5 1
empty 0
size 2
front 5
back 10
height 1
member  5 1
member 10 1
member 15 0
insert 15 1
empty 0
size 3
front 5
back 15
height 1
member  5 1
member 10 1
member 15 1
traverse
insert 7 1
insert 6 1
size 5
height 3
traverse
remove 5 1
remove 5 0
front 6
remove 7 1
front 6
traverse
remove 6 1
front 10
remove 10 1
front 15
back 15
height 3
traverse
clean 
traverse
remove 6 0
traverse 
clean 
remove 15 1
insert 15 1
traverse
delete
new 
insert 7 1
insert 3 1
insert 11 1
insert 1 1
insert 5 1
insert 9 1
insert 13 1
insert 0 1
insert 2 1
insert 4 1
insert 6 1
insert 8 1
insert 10 1
insert 12 1
insert 14 1
size 15
traverse
remove 7 1
traverse
clean
traverse
delete
new 
traverse 
delete
new 
insert 5 1
insert 3 1
remove 5 1
member 5 0
remove 3 1
back!
front!
delete
new 
insert 5 1
insert 3 1
back 5 
front 3
remove 5 1
back 3
front 3
delete
new 
insert 5 1
insert 3 1
remove 5 1
clean 
delete
summary
exit