Therefore, the chart above treats class 2 suffixes as causing no change in roots of these types. Additionally, several forms in the original chart have "-" in place of "+" in reduplicative forms. They are taken as errors here, and corrected in the chart above. Root classes C2 and C3 are included in this chart as they are included in his chart even though there are no known roots belonging to these classes (which would presumably have the shapes CəRR and CəRY). Root class B3 is included with the changes noted in the original chart although states that there are no known roots of this type.