package main
 
import (
    "bufio"
    "fmt"
    "os"
    "strings"
)
 
func transform(textBlock []string) []string {
    var transformedText []string
    t := ""
    longest := 0
    for _, line := range textBlock {
        if len(line) > longest {
            longest = len(line)
        }
    }
    for i := 0; i < longest; i++ {
        for _, line := range textBlock {
            if i < len(line) {
                t += string(line[i])
            } else {
                t += " "
            }
        }
        transformedText = append(transformedText, strings.TrimRight(t, " "))
        t = ""
    }
    return transformedText
}
 
func main() {
    reader := bufio.NewReader(os.Stdin)
    input := "_"
    var textBlock []string
    fmt.Println("Lines to transform (blank to continue):")
    for input != "" {
        input, _ = reader.ReadString('\n')
        input = strings.Trim(input, " \n\r")
        textBlock = append(textBlock, input)
    }
    textBlock = textBlock[:len(textBlock)-1]
    transformedText := transform(textBlock)
    for _, text := range transformedText {
        fmt.Println(text)
    }
}

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package main

import "fmt"

func main() {
    queue := make(chan string, 2)
    queue <- "one"
    queue <- "twoO"
    close(queue)
    for elem := range queue {
        fmt.Println(elem)
    }
}