C11111211113313112113313331333133313331333132212111111113313232321   >>    C1111121111331311211331333133313331333133313221211111111331323232   <<    C11111211113313112113313331333133313331333132212111111113313232323   >>      C11111211113313112113313331333133313331333132212111111113313232322   >>