-- jcr_table_main[chr_code] = index
-- index : internal 0, 1, 2, ..., 216 0: 'other'
-- external 1 2 216, (out of range): 'other'
-- jcr_table_main[chr_code] = index
-- index : internal 0, 1, 2, ..., 216 0: 'other'
-- external 1 2 216, (out of range): 'other'