NF = 3
$1 = <>
$2 = <>
$3 = <3>
NF = 3
$1 = <>
$2 = <>
$3 = <3>
NF = 7
$1 = <>
$2 = <>
$3 = <a>
$4 = <>
$5 = <b>
$6 = <>
$7 = <>
NF = 7
$1 = <>
$2 = <>
$3 = <a>
$4 = <>
$5 = <b>
$6 = <>
$7 = <>
NF = 3
$1 = <"a">
$2 = <>
$3 = <"b">
NF = 0
NF = 0
NF = 1
$1 = <"">
NF = 1
$1 = <"">
NF = 1
$1 = <xx>
NF = 1
$1 = <xx>
NF = 2
$1 = <>
$2 = <>
NF = 2
$1 = <>
$2 = <>