#  u_03.txt
#
#  A 3 by 5 array:
#
#    311  312  313  314  315
#    321  322  323  324  325
#    331  332  333  334  335
#
#  written as a vector, preserving columns.
#
  311
  321
  331
  312
  322
  332
  313
  323
  333
  314
  324
  334
  315
  325
  335