C21111113313132322331323331323113313233313331323133313231121121   >>    C2111111331313232233132333132311331323331333132313331323112112   <<    C21111113313132322331323331323113313233313331323133313231121123   >>      C21111113313132322331323331323113313233313331323133313231121122   >>