PY01015 - SỐ KHÔNG GIẢM

import math as mt
t = int(input())
for k in range(t):
	a = list(map(int,input()))
	kt = "YES"
	for i in range(1,len(a)):
		if a[i]-a[i-1]<0:
			kt = "NO"
			break
	print(kt)