R version 2.15.1 (2012-06-22) -- "Roasted Marshmallows"
Copyright (C) 2012 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i686-pc-linux-gnu (32-bit)

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> x <- array(list(4,4,6,,8,8,4,,4,8,5,4,,4,,4,4,4,4,,8,4,,4,,4,8,,4,7,4,,4,5,4,4,4,,4,4,,4,4,15,,10,,4,,8,4,,4,,4,4,7,4,6,,5,,4,16,,5,,12,6,,9,9,4,5,4,,4,5,4,4,,4,,5,4,6,4,,4,18,,4,,6,,4,4,5,4,,4,,5,10,5,8,8,,5,,4,,4,,4,5,4,,8,,4,5,14,8,8,4,,4,6,4,7,7,,4,6,,4,,7,4,,4,8,4,,4,10,,8,6,4,4,4,5,4,6,4,,5,7,8,,5,8,10,8,5,12,4,,5,4,6,,4,,4,7,,7,,10,,4,,5,8,11,,7,,4,8,6,7,5,,4,8,4,,8,,6,,4,,9,5,6,4,,4,,4,,5,6,16,6,6,,4,4,),dim=c(1,161),dimnames=list(c('AM','AF'),1:161))
Error in list(4, 4, 6, , 8, 8, 4, , 4, 8, 5, 4, , 4, , 4, 4, 4, 4, , 8,  : 
  argument 4 is empty
Calls: array -> as.vector
Execution halted