function shopingList(strArr) {
    let list = strArr.shift().split('!')
    for (let line of strArr) {
        let [command, ...product] = line.split(' ')
        if (command === 'Urgent') {
            if (!list.includes(...product)) {
                list.unshift(...product)
            }
        } else if (command === 'Unnecessary') {
            if (list.includes(...product)) {
                let index = list.indexOf(...product)
                list.splice(index, 1)
            }
        } else if (command === 'Correct') {
            let [oldItem, newItem] = product
            if (list.includes(oldItem)) {
                let index = list.indexOf(oldItem)
                list.splice(index, 1, newItem)
            }
        } else if (command === 'Rearrange') {
            if (list.includes(...product)) {
                let index = list.indexOf(...product)
                let newItem = list.splice(index, 1)
                list.push(newItem)
            }
        } else {
            console.log(list.join(', '))
        }
    }


}