Convert a list of $NULL into multiple dataframes

There must be a simpler and easier way but it's early here and I am only on my first cup of tea.
Just but each element into a data frame.
Quick and dirty example:
============================dat1? <- list(aa = 1:20, bb? <- data.frame(xx = 1:5, yy = LETTERS[1:5]))

dat2 = data.frame(dat1[[1]])

======================================================

I have the following list:

tables

? ? $`NULL`
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? V1? ? V2? ? ? V3
? ? ? ? 1? ? ? ? ? ? ? ? ? Year? 1992? 1993


? ? $`NULL`
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? V1? ? ? ? ? ? ? ? ? ? ? ? ? V2? ? V3? ? V4
? ? ? ? ? 1? ? ? ? ? ? ? ? ? Age Average (cm)? ? N? ? ? SD
? ? ? ? ? 2? ? ? ? ? ? ? ? 18-19? ? ? ? ? ? ? ? ? ? ? ? 178.3? 6309 6.39

I want to turn it into 2 dataframes:

A
$V1
$V2
$V3


B
$V1
$V2
$V3


Any easy hint?
Thanks




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