for t in range(int(input())):
  N=int(input())
  A=''
  if N%3==1:
    A='12'
  elif N%3==2:
    A='252'
  else:
    A=''
  A+='5252'*(N//3)
  if len(A)%7:
    print(-1)
    continue
  x=len(A)
  S=''
  while x>=28:
    x-=28
    S+='ACCACCCCCCCCABACAAFFE'
  T=''
  while x:
    T+=X[x//7-1]
    x-=7
  S=T+S
  print(S)