C212212121212113313221323131323131323132322331323132233132333132313311211321   >>    C21221212121211331322132313132313132313232233132313223313233313231331121132   <<    C212212121212113313221323131323131323132322331323132233132333132313311211323   >>      C212212121212113313221323131323131323132322331323132233132333132313311211322   >>