group by

[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]
[l]