fill ~~-1~ ~~-1~ air 0 replace normal_stone_stairs 
fill ~~-1~ ~~-1~ air 0 replace andesite_stairs
fill ~~-1~ ~~-1~ air 0 replace granite_stairs
fill ~~-1~ ~~-1~ air 0 replace diorite_stairs
fill ~~-1~ ~~-1~ air 0 replace polished_diorite_stairs
fill ~~-1~ ~~-1~ air 0 replace polished_andesite_stairs
fill ~~-1~ ~~-1~ air 0 replace polished_granite_stairs
fill ~~-1~ ~~-1~ air 0 replace sandstone_stairs
fill ~~-1~ ~~-1~ air 0 replace red_sandstone_stairs 
fill ~~-1~ ~~-1~ air 0 replace smooth_sandstone_stairs
fill ~~-1~ ~~-1~ air 0 replace smooth_red_sandstone_stairs
fill ~~-1~ ~~-1~ air 0 replace stone_stairs
fill ~~-1~ ~~-1~ air 0 replace mossy_cobblestone_stairs
fill ~~-1~ ~~-1~ air 0 replace stone_brick_stairs
fill ~~-1~ ~~-1~ air 0 replace mossy_stone_brick_stairs
fill ~~-1~ ~~-1~ air 0 replace brick_stairs
fill ~~-1~ ~~-1~ air 0 replace quartz_stairs 
fill ~~-1~ ~~-1~ air 0 replace smooth_quartz_stairs
fill ~~-1~ ~~-1~ air 0 replace nether_brick_stairs
fill ~~-1~ ~~-1~ air 0 replace blackstone_stairs
fill ~~-1~ ~~-1~ air 0 replace polished_blackstone_stairs
fill ~~-1~ ~~-1~ air 0 replace prismarine_stairs
fill ~~-1~ ~~-1~ air 0 replace red_nether_brick_stairs
fill ~~-1~ ~~-1~ air 0 replace dark_prismarine_stairs
fill ~~-1~ ~~-1~ air 0 replace prismarine_brick_stairs 
fill ~~-1~ ~~-1~ air 0 replace endstone_brick_stairs
fill ~~-1~ ~~-1~ air 0 replace purpur_stairs
fill ~~-1~ ~~-1~ air 0 replace oak_wood_stairs
fill ~~-1~ ~~-1~ air 0 replace dark_oak_wood_stairs
fill ~~-1~ ~~-1~ air 0 replace spruce_wood_stairs
fill ~~-1~ ~~-1~ air 0 replace acacia_wood_stairs
fill ~~-1~ ~~-1~ air 0 replace jungle_wood_stairs
fill ~~-1~ ~~-1~ air 0 replace warped_stairs 
fill ~~-1~ ~~-1~ air 0 replace crimsom_stairs
fill ~~-1~ ~~-1~ air 0 replace polished_blackstone_brick_stairs
fill ~~-1~ ~~-1~ air 0 replace brich_wood_stairs