```go
package main

import (
	"bufio"
	"fmt"
	"os"
	"strings"
)

func main() {
	reader := bufio.NewReader(os.Stdin)
	s, _ := reader.ReadString('\n')
	s = strings.TrimSpace(s)
	
	n := len(s)
	distinctTotal := 0
	seen := make([]bool, 26)
	for i := 0; i < n; i++ {
		c := s[i] - 'a'
		if !seen[c] {
			seen[c] = true
			distinctTotal++
		}
	}
	
	atMost := make([]int64, distinctTotal+1)
	for k := 1; k <= distinctTotal; k++ {
		atMost[k] = countAtMost(s, k)
	}
	
	fmt.Println(distinctTotal)
	for k := 1; k <= distinctTotal; k++ {
		fmt.Println(atMost[k] - atMost[k-1])
	}
}

func countAtMost(s string, k int) int64 {
	if k == 0 {
		return 0
	}
	n := len(s)
	count := make([]int, 26)
	distinct := 0
	var res int64 = 0
	left := 0
	
	for right := 0; right < n; right++ {
		idx := s[right] - 'a'
		if count[idx] == 0 {
			distinct++
		}
		count[idx]++
		
		for distinct > k {
			idxLeft := s[left] - 'a'
			count[idxLeft]--
			if count[idxLeft] == 0 {
				distinct--
			}
			left++
		}
		
		res += int64(right - left + 1)
	}
	return res
}
```