making list of size n/2 and 2 columns from a dataframe in r
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Here is data:

    myd <- data.frame (var1.1 = rnorm (10, 5,2), var1.2 = rnorm (10, 3,1),
                       varA.1 = rnorm (10, 5,2), varA.2 = rnorm (10,1,2), 
                        C.1 = rnorm (10, 3,1), C.2 = rnorm (10, 4,1))

I want create a list with of size 3 (n/2, if n is number of variable in dataframe) (with two columns each)

    mylist <- as.list (myd)

creats a list with each variable as component. But I want create list of pair of variable in one unit - var1.1 and var1.2, similarly varA.1 and varA.2 or C.1 and C.2. Thus new list unit has 2 columns each. Any solution ? 

 