package etl

import "strings"

// Transform takes the legacy data structure
// and converts it into the new and improved
// data structure oh man this new system will
// make us so rich you guys.
func Transform(input map[int][]string) map[string]int {
	ret := make(map[string]int)
	for k, v := range input {
		for _, let := range v {
			ret[strings.ToLower(let)] = k
		}
	}
	return ret
}