'use strict'

function main(input) {
    const num = ~~(input.trim())
    switch (num) {
        case 2:
        case 4:
        case 5:
        case 7:
        case 9:
            console.log('hon')
            break
        case 0:
        case 1:
        case 6:
        case 8:
            console.log('pon')
            break
        case 3:
            console.log('bon')
            break
    }
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'))
