C212212121212113313221323131323133313132322331323231323131112111   >>    C21221212121211331322132313132313331313232233132323132313111211   <<    C212212121212113313221323131323133313132322331323231323131112113   >>      C212212121212113313221323131323133313132322331323231323131112112   >>