comment:Rebuild-offset=999
initialize:999:0:10:0:10
insert:ATL:Atlanta:1:4
insert:JFK:New York:9:4
insert:BWI:Baltimore:8:9
insert:IAD:Dulles:2:1
insert:ORD:Chicago:2:6
insert:DFW:Dallas-Fort Worth:3:8
insert:DCA:Washington:6:7
insert:LAX:Los Angeles:4:2
insert:SEA:Seattle:5:4
insert:SFO:San Francisco:7:1
list
iterate
delete:BWI
list
iterate
delete:IAD
delete:ORD
delete:SEA
list
iterate
clear
list
iterate
