!
hello:world:how:are:you!
hello<tab>world<tab>how<tab>are<tab><tab>you!
user<tab>group<tab>id1<tab>id2
x<tab>ay<tab>az
x<tab>a <tab>aax <tab> x
col1<tab>col2:val2<tab>col3<tab>

"line1"
"line2"
"line3"
"line4"

"line1"
"line2"
"line3"
"line4nonl"