#!/bin/bash
echo {1..123} | awk '
BEGIN {RS=" "} 
$1 %  2 == 0 {x = x "A"}
$1 %  3 == 0 {x = x "B"}
$1 %  5 == 0 {x = x "C"}

#$1 % 30 == 0 {x = x "!\n"}

x==""        {print $0; next}
             {print "\t" x; x=""}
'