C31232233133313221211113313331333133313112223313231333132321221   >>    C3123223313331322121111331333133313331311222331323133313232122   <<    C31232233133313221211113313331333133313112223313231333132321223   >>      C31232233133313221211113313331333133313112223313231333132321222   >>