1A and 1C have a small space in between them, about 30cm, so not wide enough for someone to sit in it so no worries of someone in between, but good for friends travelling together, because not too far away, whereas 1E is a normal seat - wide enough for a person to sit , but they dont use them, because its business class. So @A is good for 2 travellers together. But 1A,C,D,E,F all have the bulkhead in front , so not much room if you have long legs, and want to stretch them.