inv

_ _ _ _
(c).-.(c) (c).-.(c)
/ ._. \ / ._. \
__\( Y )/__ __\( Y )/__
(_.-/'-'\-._)(_.-/'-'\-._)
|| H || || I ||
_.' `-' '._ _.' `-' '._
(.-./`-'\.-.)(.-./`-'\.-.)
`-' `-' `-' `-'