For each of the compounds A through F indicate the number of structurally-distinct groups of carbon atoms, and also the number of distinct groups of constitutionally equivalent hydrogens. Stereochemically distinct hydrogens should not be reported. Enter a number from 1 to 9 in each answer box.

		A	Number of distinct carbon atoms: ... Number of distinct hydrogen groups:
		B	Number of distinct carbon atoms: ... Number of distinct hydrogen groups:
		C	Number of distinct carbon atoms: ... Number of distinct hydrogen groups:
		D	Number of distinct carbon atoms: ... Number of distinct hydrogen groups:
		E	Number of distinct carbon atoms: ... Number of distinct hydrogen groups:
		F	Number of distinct carbon atoms: ... Number of distinct hydrogen groups: