const data = `1.52.0.0 -- 1.55.255.255

14.0.16.0 -- 14.0.31.255

123.15.0.1 -- 123.15.0.255`

data.split('\n').map(item => {

const ips = item.split(' -- ');

console.log(`

edit 1

        set start-ip ${ips[0]}

        set end-ip ${ips[1]}

    next

`)

})