What are two possible systematic names for the following?
(i)
(ii)

(i) 2-methyl-3-neopentyloxirane & 2,3-epoxy-5,5-dimethylhexane

(ii) 2-(3,3-dimethylbutan-2-yl)-3-ethyloxirane & 3,4-epoxy-5,6,6-trimethylheptane

(i) 2-methyl-3-tert-pentyloxirane & 1,2-epoxy-4,4-dimethylhexane

(ii) 2-(3,3-dimethylbutan-2-yl)-3-ethyloxirane & 4,5-epoxy-2,2,3-trimethylheptane

(i) 2-methyl-3-tert-pentyloxirane & 1,2-epoxy-4,4-dimethylhexane

(ii) 5-(3,3-dimethylbutan-2-yl)-4-ethyloxirane & 3,4-epoxy-1,1,2-trimethylheptane

(i) 2-methyl-3-neopentyloxirane & 2,3-epoxy-5,5-dimethylhexane

(ii) 5-(3,3-dimethylbutan-2-yl)-4-ethyloxirane & 3,4-epoxy-1,1,2-trimethylheptane