Question: nops on multiple lists - two letter variables

I have a large number of lists labelled L1, L2, L3 ...etc.

I want to determine the number of elements in each list.  If I had labelled my lists L(1), L(2), L(3) ... I would easily have been able to pull out the number of elements with sequence

seq(nops(L(i)),i=1..3);

nops doesn't allow multiple arguments.  Is there any way I can use seq on the lists L1, L2, L3, ... etc  In other words, how can I have a two letter variable and get maple to vary the 2nd variable?

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