INT OK
add 2 OK
add 1 OK
add 3 OK
print 
  1: 2
  2: 1 3
remove 2 OK
print 
  1: 1
  2: _ 3
remove 3 OK
print 
  1: 1
remove 1 OK
print empty
clear OK
size 0
print empty
add 20 OK
add 10 OK
add 30 OK
add 5 OK
add 35 OK
add 29 OK
add 28 OK
add 27 OK
add 26 OK
add 11 OK
add 12 OK
add 13 OK
add 14 OK
add 15 OK
print 
  1: 20
  2: 10 30
  3: 5 11 29 35
  4: _ 12 28 _
  5: _ 13 27 _
  6: _ 14 26 _
  7: _ 15
remove 5 OK
print 
  1: 20
  2: 10 30
  3: _ 11 29 35
  4: _ 12 28 _
  5: _ 13 27 _
  6: _ 14 26 _
  7: _ 15
remove 35 OK
print 
  1: 20
  2: 10 30
  3: _ 11 29 _
  4: _ 12 28 _
  5: _ 13 27 _
  6: _ 14 26 _
  7: _ 15
remove 20 OK
print 
  1: 15
  2: 10 30
  3: _ 11 29 _
  4: _ 12 28 _
  5: _ 13 27 _
  6: _ 14 26 _
remove 10 OK
print 
  1: 15
  2: 11 30
  3: _ 12 29 _
  4: _ 13 28 _
  5: _ 14 27 _
  6: 26 _
remove 30 OK
print 
  1: 15
  2: 11 29
  3: _ 12 28 _
  4: _ 13 27 _
  5: _ 14 26 _
remove 15 OK
print 
  1: 14
  2: 11 29
  3: _ 12 28 _
  4: _ 13 27 _
  5: 26 _
remove 27 OK
print 
  1: 14
  2: 11 29
  3: _ 12 28 _
  4: _ 13 26 _
remove 11 OK
print 
  1: 14
  2: 12 29
  3: _ 13 28 _
  4: 26 _
remove 26 OK
print 
  1: 14
  2: 12 29
  3: _ 13 28 _
remove 29 OK
print 
  1: 14
  2: 12 28
  3: _ 13
remove 14 OK
print 
  1: 13
  2: 12 28
remove 13 OK
print 
  1: 12
  2: _ 28
remove 28 OK
print 
  1: 12
clear OK
size 0
print empty
STRING OK
add Combing OK
remove Combing OK
add Combing OK
add Coming OK
add front OK
size 3
print 
  1: Combing
  2: _ Coming
  3: _ front
remove front OK
size 2
print 
  1: Combing
  2: _ Coming
add back OK
add to OK
add where OK
remove where OK
size 4
print 
  1: Combing
  2: _ Coming
  3: _ back
  4: _ to
add where OK
size 5
print 
  1: Combing
  2: _ Coming
  3: _ back
  4: _ to
  5: _ where
add you OK
add started OK
add is OK
add not OK
add the OK
add same OK
add as OK
add never OK
add leavening. OK
add leaving. OK
add -Terry OK
add Pratchett OK
size 17
print 
  1: Combing
  2: -Terry Coming
  3: _ back
  4: as to
  5: Pratchett _ started where
  6: is the _ you
  7: _ not
  8: never same
  9: leavening. _
  10: _ leaving.
remove Combing OK
remove leavening. OK
remove computerviruses Error
size 15
print 
  1: -Terry
  2: _ Coming
  3: _ back
  4: as to
  5: Pratchett _ started where
  6: is the _ you
  7: _ not
  8: never same
  9: leaving. _
clear OK
size 0
print empty
clear OK
remove "string" Error
remove -Terry Error
size 0
print empty