[R] Problem of vocabulary : retrieve element of a list of a list

[Ptit_Bleu]

Hi,

I read the posts for 2 hours and ?list and tried many comninations but I
haven't found the answer to this basic question. So I decided to post my
question even if it is a silly one ...

What is the instruction to retrieve, for example, the "D" of the first list
?
Thanks in advance,
Ptit Bleu.


> x<-list(LETTERS[1:5], LETTERS[10:20])
> x
[[1]]
[1] "A" "B" "C" "D" "E"

[[2]]
 [1] "J" "K" "L" "M" "N" "O" "P" "Q" "R" "S" "T"

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