4
7856
2234
7890
6789
searchReturn
Jane
Jack
Mike
Nick
length
4
list a
4
7856
2234
7890
6789
list b
2
7857
2237
list a
4
7856
2234
7890
6789
searchReturn 7890
Node@923e30
searchRemove7890
searchReturn 7890
null
3
7856
2234
6789
searchRemove6789
2
7856
2234
searchRemove7856
1
2234
insert6788
2
6788
2234
insert7898
3
7898
6788
2234
insert2238
4
2238
7898
6788
2234
isEmptyList = false
length a: 4
insert z x y in c
3
7890
6789
2234
searchRemove x y z in c
2
7890
2234
1
2234
0
isEmptyList = true
length = 0