2.1.1.1. [DEL] a1c0
2.1.1.1. Sample A
A1:
one lamp0 per cent
one lamp not more than20 per cent
A2:
both lamps more than0 per cent
but not more than20 per cent A2:
both lamps more than0 per cent
but not more than20 per cent 		a0c0