C212212121213232233131313231323223313232233132222331323233233311231   >>    C21221212121323223313131323132322331323223313222233132323323331123   <<    C212212121213232233131313231323223313232233132222331323233233311233   >>      C212212121213232233131313231323223313232233132222331323233233311232   >>