C212212121213232233131313231323223313232233132222331323233231221   >>    C21221212121323223313131323132322331323223313222233132323323122   <<    C212212121213232233131313231323223313232233132222331323233231223   >>      C212212121213232233131313231323223313232233132222331323233231222   >>