1 Forward: GLIST_LENGTH(16)
18 Backward: GLIST_LENGTH(10)
29 Truncate: GLIST_LENGTH(3)
33 Concat: GLIST_LENGTH(26)
60 Difference: GLIST_LENGTH(8)
69 Union: GLIST_LENGTH(18)
88 Intersect: GLIST_LENGTH(8)
97 Sort: GLIST_LENGTH(10)
108 Sort + Uniq + Concat: GLIST_LENGTH(18)
128 Insert: GLIST_LENGTH(11)
140 Delete :10:: GLIST_LENGTH(10)