Este (Singular masculine)
this
Ese (Singular masculine)
that
Aquel (Singular masculine)
that one over there
Esta (Singular feminine)
this
Esa (Singular feminine)
that
Aquella (Singular feminine)
that one over there
Estos (Plural masculine)
these
Esos (Plural masculine)
those
Aquellos (Plural masculine)
those over there
Estas (Plural feminine)
these
Esas (Plural feminine)
those
Aquellas (Plural feminine)
those over there