  Theoretical estimations of production cross sections of light $\Lambda$ and
$\Sigma$ hypernuclei in $(e,e'K^{+})$ reactions at around CEBAF energies are
given. Because of dominant spin-flip amplitudes and large momentum transfers,
unnatural parity states and stretched states of hypernuclei are favorably
excited. They are compared with quasifree hyperon productions.
