package main
import "github.com/01-edu/z01"
func main() {
diff := 'a' - 'A'
for c := 'a'; c <= 'z'; c++ {
if c%2 == 0 {
z01.PrintRune(c - diff)
} else {
z01.PrintRune(c)
}
z01.PrintRune('\n')