14. A dictionary producing aiding apparatus as recited in claim 13, wherein said available parts of speech include noun and verb, and said estimate means includes means for estimating a location at which said second form is different from said first form, when said target morpheme is a verb, and means for estimating a location at which said second form is different from said first form, when said target morpheme is a noun.
14. A dictionary producing aiding apparatus as recited in claim 13, wherein said available parts of speech include noun and verb, and said estimate means includes means for estimating a location at which said second form is different from said first form, when said target morpheme is a verb, and means for estimating a location at which said second form is different from said first form, when said target morpheme is a noun. 18. A dictionary production aiding apparatus as recited in claim 14, wherein said means for estimating a location at which said second form is different form said first form when said target morpheme is a noun includes means for estimating the head position at which said second form is different from said first form.