C212212121213232233131313231323223313232233132222331323132213231323221   >>    C21221212121323223313131323132322331323223313222233132313221323132322   <<    C212212121213232233131313231323223313232233132222331323132213231323223   >>      C212212121213232233131313231323223313232233132222331323132213231323222   >>