Ositus

string = str(input())

np = 0

for cps in range(2**(len(string)-1)):
    e_cut = 0
    num = 0
    end = []
    for i in range(len(string)-1):
        if (2**i) & cps != 0:
            end.append(string[e_cut:(i+1)])
            e_cut = i+1
    end.append(string[e_cut:])
    #space
    for q in range(len(end)):
        if len(end[q]) == len(set(end[q])):
            num += 1
    if num == len(end):
        np += 1

print(np%1000000007)

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

Test 5

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

Test 6

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 7

Group: 3

Verdict: TIME LIMIT EXCEEDED