C212212121213232233131313231323223313233313231211331323131231231   >>    C21221212121323223313131323132322331323331323121133132313123123   <<    C212212121213232233131313231323223313233313231211331323131231233   >>      C212212121213232233131313231323223313233313231211331323131231232   >>