# Stack solution of Codechef's COMPILER
# Problem: https://w...content-available-to-author-only...f.com/problems/COMPILER
 
t = int(input())
for _ in range(t):
    expression = input()
 
    ans, stack = 0, []
    for idx, char in enumerate(expression):
        if char == '<':
            # push in stack
            stack.append(char)
 
        elif char == '>':
            # if string is invalid break
            if not stack:
                break
 
            stack.pop()
            # if string is valid upto index idx
            # calculate answer
            if not stack:
                ans = max(idx + 1, ans)
 
    print(ans)

IyBTdGFjayBzb2x1dGlvbiBvZiBDb2RlY2hlZidzIENPTVBJTEVSCiMgUHJvYmxlbTogaHR0cHM6Ly93Li4uY29udGVudC1hdmFpbGFibGUtdG8tYXV0aG9yLW9ubHkuLi5mLmNvbS9wcm9ibGVtcy9DT01QSUxFUgoKdCA9IGludChpbnB1dCgpKQpmb3IgXyBpbiByYW5nZSh0KToKICAgIGV4cHJlc3Npb24gPSBpbnB1dCgpCiAgICAKICAgIGFucywgc3RhY2sgPSAwLCBbXQogICAgZm9yIGlkeCwgY2hhciBpbiBlbnVtZXJhdGUoZXhwcmVzc2lvbik6CiAgICAgICAgaWYgY2hhciA9PSAnPCc6CiAgICAgICAgICAgICMgcHVzaCBpbiBzdGFjawogICAgICAgICAgICBzdGFjay5hcHBlbmQoY2hhcikKICAgICAgICAKICAgICAgICBlbGlmIGNoYXIgPT0gJz4nOgogICAgICAgICAgICAjIGlmIHN0cmluZyBpcyBpbnZhbGlkIGJyZWFrCiAgICAgICAgICAgIGlmIG5vdCBzdGFjazoKICAgICAgICAgICAgICAgIGJyZWFrCiAgICAgICAgICAgIAogICAgICAgICAgICBzdGFjay5wb3AoKQogICAgICAgICAgICAjIGlmIHN0cmluZyBpcyB2YWxpZCB1cHRvIGluZGV4IGlkeAogICAgICAgICAgICAjIGNhbGN1bGF0ZSBhbnN3ZXIKICAgICAgICAgICAgaWYgbm90IHN0YWNrOgogICAgICAgICAgICAgICAgYW5zID0gbWF4KGlkeCArIDEsIGFucykKICAgIAogICAgcHJpbnQoYW5zKQ==

NQombHQ7Jmx0OyZndDsmZ3Q7CiZndDsmbHQ7CiZsdDsmZ3Q7Jmd0OyZndDsKJmx0OyZndDsmZ3Q7CiZsdDsmZ3Q7Jmx0OyZsdDsmbHQ7Jmd0OyZndDsmZ3Q7Jmd0Ow==

5
<<>>
><
<>>>
<>>
<><<<>>>>