C1212121231123232233131323223313232213231333131122233131323132313232321   >>    C121212123112323223313132322331323221323133313112223313132313231323232   <<    C1212121231123232233131323223313232213231333131122233131323132313232323   >>      C1212121231123232233131323223313232213231333131122233131323132313232322   >>