C212212121213232233131313231322331323132332313231323132313231323211   >>    C21221212121323223313131323132233132313233231323132313231323132321   <<    C212212121213232233131313231322331323132332313231323132313231323213   >>      C212212121213232233131313231322331323132332313231323132313231323212   >>