R version 2.15.2 (2012-10-26) -- "Trick or Treat"
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(21,16,19,,18,16,23,,17,12,19,16,,19,,20,13,20,27,,17,8,,25,,26,13,,19,15,5,,16,14,24,24,9,,19,19,,25,19,18,,15,,12,,21,12,,15,,28,25,19,20,24,,26,,25,12,,12,,15,17,,14,16,11,20,11,,22,20,19,17,,21,,23,18,17,27,,25,19,,22,,24,,20,19,11,22,,22,,16,20,24,16,16,,22,,24,,16,,27,11,20,,20,,27,20,12,8,21,18,,24,16,18,20,20,,19,17,,16,,26,15,,22,17,23,,21,19,,14,17,12,24,18,20,16,20,22,,12,16,17,,22,12,14,23,15,17,28,,20,23,13,,18,,23,19,,23,,12,,16,,23,13,22,,18,,23,20,10,17,18,,15,23,17,,17,,22,,20,,20,19,18,22,,20,,22,,18,16,16,16,16,,17,18,),dim=c(1,161),dimnames=list(c('I2M','I2F'),1:161))
Error in list(21, 16, 19, , 18, 16, 23, , 17, 12, 19, 16, , 19, , 20,  : 
  argument 4 is empty
Calls: array
Execution halted