eefecf contains ef0ef1ef2ef3ef4ef5ef6ef7ef8ef9efaefbefcefdefeefef0ef1ef2ef3ef4ef5ef6ef7ef8ef9efaefbefcefdefeefffef contains fc0fc1fc2fc3fc4fc5fc6fc7fc8fc9fcafcbfccfcdfcefcfc0fc1fc2fc3fc4fc5fc6fc7fc8fc9fcafcbfccfcdfcefcfffc contains ec0ec1ec2ec3ec4ec5ec6ec7ec8ec9ecaecbeccecdecec0ec1ec2ec3ec4ec5ec6ec7ec8ec9ecaecbeccecdeceecfeecfec
contains ef0ef1ef2ef3ef4ef5ef6ef7ef8ef9efaefbefcefdefeefef0ef1ef2ef3ef4ef5ef6ef7ef8ef9efaefbefcefdefeefffef
contains fc0fc1fc2fc3fc4fc5fc6fc7fc8fc9fcafcbfccfcdfcefcfc0fc1fc2fc3fc4fc5fc6fc7fc8fc9fcafcbfccfcdfcefcfffc
contains ec0ec1ec2ec3ec4ec5ec6ec7ec8ec9ecaecbeccecdecec0ec1ec2ec3ec4ec5ec6ec7ec8ec9ecaecbeccecdeceecfeecfec