C212212121212113313132322331311221123231323131113331323231323111   >>    C21221212121211331313232233131122112323132313111333132323132311   <<    C212212121212113313132322331311221123231323131113331323231323113   >>      C212212121212113313132322331311221123231323131113331323231323112   >>