What is the output for each of these awk script commands? -- 1 = 1 && NR >= 5 { print $1 } -- 1,5

What is the output for each of these awk script commands?

-- 1 <= NF { print $5 }

-- NR >= 1 && NR >= 5 { print $1 }

-- 1,5 { print $0 }

-- {print $1 }