bash/xargs error

  1 #!/bin/bash
  2 xargsout=$( echo "york.txt" | xargs -t wc )
  3 echo $xargsout
  4 xargsmulti=$( echo "york.txt employee" | xargs -t -n1 wc)
  5 echo $xargsmulti
  6
  7 $(echo  "1 2 3 4 5 6" | xargs -t -n3)

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wc york.txt
8 56 264 york.txt
wc york.txt
wc employee
8 56 264 york.txt 5 25 215 employee
/bin/echo 1 2 3
/bin/echo 4 5 6
./randomexamples.sh: line 7: 1: command not found