2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 Gn instead of En in TTL Bookr An/B instead of S in TTL Book 1A instead of i0a in TTL book 1B instead of i1a in TTL book 2A instead of i0a in TTL book 2B instead of i1b in TTL book 3A 3B 4A 4B 1Y in TTL book 2Y 3Y 4Y